Just a few days into the new year is a good time to look back at the New Year's resolution, for health, diet and fitness! A 75-ditness challenge may not be the first thing that comes to your mind. However, this has gained a massive traction on TikTok. It is called the "75 Hard" challenge, where participants also document their progress. The challenge includes strict rules to comply with. These include: adhering to a healthy diet with no cheat meals or alcohol, completing two 45-minute workouts daily (one outdoors), drinking over three liters of water, and reading 10 pages of a non-fiction book each day.

While this might seem like a straightforward regime, experts suggest that for some, a more relaxed version may help them better.

What the participants feel?

As reported in BBC, Devamsha Gunput, 29, who successfully completed the 75 Hard challenge while juggling a full-time job as a digital consultant in Edinburgh described it as a "tough but transformative journey". One of the biggest challenges she faced was setting boundaries with her South Asian family to maintain her strict diet.

Living in Edinburgh’s dark, wet, and cold weather made outdoor workouts particularly difficult. Despite these hurdles, Devamsha noticed lasting benefits, including more consistent exercise habits, improved reading routines, and a better relationship with food.

The origin of this challenge

The challenge was originally created in 2019 by author and podcaster Andy Frisella to foster mental toughness. While not a certified personal trainer or doctor, Frisella designed the program based on his personal experiences, emphasizing discipline rather than weight loss or specific physical outcomes.

Initial challenges

For Sophie Deakins, 27, who completed the challenge while managing a cinema in London, 75 Hard was a way to address her struggles with consistency and discipline. She eliminated sweets, opting instead for natural sugars from fruit and honey, and tracked her diet and water intake meticulously.

Sophie found the first few weeks challenging as she adjusted to new habits, particularly when socializing, as it often revolved around dining out and drinking. By being open about her goals, she was able to navigate these situations without succumbing to temptation.

Post-challenge, Sophie continued some habits, like avoiding unnecessary coffee shop purchases and limiting eating out, which not only improved her health but also saved her money. Most importantly, she experienced a significant mindset shift, overcoming self-doubt and excuses about time.

Balancing the Pros and Cons

While many find 75 Hard rewarding, it’s not suitable for everyone. Strength and conditioning expert and gym coaches advise considering the significant time commitment required for the workouts, reading, and other tasks. They suggest adopting simpler elements like daily movement and drinking more water without feeling overwhelmed.

Motivation is another concern. The pressure to transform one’s life at the start of the year can be counterproductive. Experts recommend setting achievable goals that add joy and value to daily life rather than creating stress.

What does not work out?

The 75 Hard challenge has not been clinically studied, nor has it been made after considering an average person's ability to cope with such changes so quickly. It is personally designed by Frisella, whose strength may not match others. This is what is making its long-term benefits unclear. Healthcare providers, doctors, and other experts point out that a more basic routine, such as regular exercise and a balanced diet, might achieve similar results without the extreme demands.

Ultimately, while 75 Hard can help build discipline and mental toughness, it’s essential to tailor health and fitness goals to your needs. For reliable guidance, the NHS Live Well website offers comprehensive advice on diet, exercise, and mental well-being.

You must have heard of burnout- feeling drained, stressed, or completely wiped out but here’s the twist, burnout isn't all in your head. Your bones and joints suffer from it too. Overtraining, disregarding pain, or forcing your body to the limit can result in what specialists refer to as "bone burnout," resulting in joint pain and stiffness, as well as early-onset arthritis. Your skeleton labors in silence, so paying attention to your body, resting, and training intelligently isn't advice, it's survival for your bones.

Over the past decade, gym culture has shifted from being a niche interest to a defining lifestyle for young adults, especially in urban areas. Strength training, high-intensity interval workouts, and endurance-based exercises dominate fitness routines, social media feeds, and wellness conversations. Yet, while pushing the body to achieve peak performance has its benefits, there is a hidden risk many young adults are unaware of- bone burnout.

Bone burnout is the premature breakdown and wear and tear of bones and joints, brought on most often by overtraining, poor technique, and neglect of initial signs of stress. Not officially a medical diagnosis, the syndrome is being more widely referred to by orthopaedic experts as a developing problem among those in their 20s and 30s. It is most commonly presented with chronic joint pain, stiffness, swelling, and, in severe cases, premature arthritis like osteoarthritis.

Dr. Rakesh Rajput, orthopaedic surgeon, explains, "Today's young adults are overloading their joints and bones past their natural limits. Once cartilage starts breaking down and warning signals are neglected, enduring damage is done. Years down the road, what began as mild pain can progress to permanent joint issues."

How Modern Lifestyle Contributes to Joint Overload?

There are a number of factors why young adults are particularly susceptible to bone burnout. Unlike older individuals, younger people tend to overestimate their physical resistance. Numerous spend excessive amounts of time on weight training, functional fitness, and cardio workouts without adequate rest, warm-up, or recovery strategies. Deviant postural habits and repetitive strain also serve to increase wear on cartilage and joints.

Even minor misalignments while squatting, lunging, or running can speed up stress on hips, knees, and spine. Repetitive high-impact exercises like plyometrics or sprint intervals amplify damage, especially when added to improper footwear or poor diet. Young adults can also ignore pain, thinking it is a part of exercising, and not a warning sign.

Dr. Rajput adds, “Ignoring knee or back pain can compromise cartilage faster than natural aging. We’re seeing meniscus tears and early degenerative changes in patients as young as 20 to 30, conditions historically observed in much older adults or elite European athletes.”

What Is Bone Burnout?

Bone burnout targets mostly the cartilage, the tough but flexible tissue that lines joints and helps to absorb shock. While cartilage receives a limited supply of blood, unlike muscle, this lowers its ability to recover from frequent stress. If young adults participate in high-volume, high-intensity training without adequate rest, microtraumas develop. Over time, sometimes years, months, or decades, these tiny injuries develop into chronic inflammation, pain, and decreased mobility.

Study also indicates that repetitive overload can transform joint mechanics. Pathologic loading patterns load ligaments, tendons, and adjacent musculature, establishing a cascade of biomechanical problems. For instance, flawed squatting technique can stress the anterior cruciate ligament (ACL) and patellar tendon and cause lifelong knee instability.

Early Warning Signs of Bone Burnout to Watch Out For

Being able to recognize bone burnout early will prevent irreversible harm. Watch out for:

• Recurring joint stiffness or pain after training
• Swelling or redness over involved joints
• Decreased range of motion
• Increased pain with activity and decreased with rest
• Clicking, popping, or grinding noise in the shoulders or knees

Dr. Rajput states, "If these symptoms extend beyond a few days, it is essential to have medical evaluation. Prompt treatment can avoid long-term conditions and protect future mobility."

Smart Fitness Practices To Avoid Bone Burnout

Prevention of bone burnout involves a balanced strategy of intensity and recovery. Some of the most important strategies are:

Organized Warm-Ups and Cool-downs: Warming up muscles before intense exercise decreases joint strains. Dynamic stretching and low-impact movements acclimatize cartilage and tendons to stress.

Balanced Exercise: Integrating strength, flexibility, and endurance exercises prevents one muscle group or joint from overuse.

Recovery Days: Recovery is necessary for cartilage repair. Overtraining without recovery makes the body more susceptible to joint degeneration.

Footwear and Equipment: Support during high-impact activities lessens cumulative stress.

Nutrition: Sufficient calcium, vitamin D, and protein provide support for bone density and muscle recovery.

Monitoring Symptoms: Pain is not a badge of effort but should be considered a signal. Ignoring pain results in long-term effects.

Routine check-ups with orthopaedic doctors or sports physiotherapists by young adults who do high-volume training, particularly those with ongoing discomfort, are also suggested by Dr. Rajput.

Is There Any Treatment For Bone Burnout?

Prevention will always be the best way, but new developments in orthopaedic care are also now offering alternatives for individuals already suffering from bone burnout. Lifestyle changes, physiotherapy, and preventive treatment are first-line therapies. But for more severe cartilage or joint injury, new innovations deliver successful solutions:

Robotic-Assisted Surgery: Robotic-assisted precision systems enable knee and joint operations to be performed minimally invasively, facilitating quicker recovery and less post-operative complication.

Partial Knee Replacement or Joint Resurfacing: For active young adults with localized joint damage, these operations reduce pain and conserve natural joint tissue, putting off the necessity for total replacement.

Targeted Physiotherapy: Individualized rehabilitation programs restore normal movement patterns, minimize inflammation, and increase supportive musculature.

Dr. Rajput adds, "Even with surgery, these advancements enable young patients to preserve mobility, quality of life, and the capacity to remain active without long-term restrictions."

What Are The Long-Term Consequences of Disregarding Bone Burnout?

Ignoring bone burnout in one's 20s can give way to a lifetime of joint problems. Chronic pain, reduced mobility, and early-onset osteoarthritis are being seen with more frequency in younger people, affecting both daily life and career. In addition, adaptations to move in a way that is less painful can result in secondary injuries to hips, back, and shoulders, leading to a chain of musculoskeletal ailments.

Bone burnout is a grim reminder that intensity without intelligence can be a trap. While young adults stand to gain much from living a physically active life, excessive training without a guide can hasten joint wear and tear. The silver lining is that with intelligent exercise programs, early symptom detection, and contemporary medical techniques, bone burnout can be prevented and controlled.

Dr. Rajput has this to say: "Fitness should add life, not detract from it. Young adults need to focus on joint health, listen to their body, and apply strategies that blend performance and preservation. Avoiding bone burnout now means an active, healthy future.

Dr. Rakesh Rajput is an orthopaedic surgeon, HOD & Director – Orthopaedics at CMRI Kolkata in India

Every January or more accurately each new month, gyms are full of people chasing fitness objectives, expecting this time things will be different- gain muscle, lose weight, or just feel healthier. With that increase in motivation follows a new wave of that seemingly limitless "fit-buddy" tips that is typically contradictory to the established facts that fills up fitness culture. Perhaps you've heard that treadmill running is better for your knees than pavement running. Or that stretching before each and every workout is absolutely essential if you don't want to get hurt. These claims sound convincing, but many of them don’t hold up to scientific scrutiny.

The fitness industry has a long tradition of handing down rules of thumb without ever stopping to wonder where they came from. But exercise physiology and sports medicine science has a very different tale to tell. Elliott Morgan, host of the Mental Floss YouTube channel, breaks down and debunks 10 common workout myths in his video, “Misconceptions About Exercise.” To train smarter not harder it's worth distinguishing fact from fiction. Let’s break down ten of the most common workout myths, and what the evidence really shows.

Myth 1: Treadmill Running Is Easy on the Knees

It's tempting to think treadmills are easier on the knees due to their cushioned belts, but studies tell a different story. Runners tend to shorten their stride when running indoors, bouncing and over-striding in ways that end up putting more stress on the joints. Outdoor running isn't necessarily worse—the most important things are technique, shoes, and slowly increasing distance to prevent overuse injuries.

Myth 2: Change Running Shoes Every Six Months

No six-month magic. The shoe life cycle is determined by your body weight, running technique, mileage, and type of shoe. Some runners wear out as many as 600 miles or more in one pair. Rather than using the calendar, listen to comfort, cushioning, and overt wear. Your body will typically indicate it's time to change.

Myth 3: Stretching Averts Injuries

Static stretching prior to exercise does not decrease injury risk—instead, it temporarily weakens muscles. According to a 2013 Journal of Strength and Conditioning Research study, static stretching decreased muscle power by approximately 2%. That is not an invitation to omit warming up. Dynamic stretches and low-intensity movement-based drills are more effective methods of getting muscles ready for activity without blunting performance.

Myth 4: If You're Not Sweating, You're Not Working Hard

Sweat is your body's means of cooling itself down, not a literal indicator of effort. Heredity, water intake, and surroundings all affect how much you sweat. Someone can burn serious calories with a low-sweat activity such as weightlifting or yoga, while another person sweats buckets on a brisk walk. Effort, not sweating, is what matters.

Myth 5: Sweating Flushes Out Toxins

The notion that sweat cleanses your body has persisted, but it's inaccurate. Sweat consists primarily of water and electrolytes, with trace toxins making up only 1% of the constituents. Detoxification's heavy lifting occurs in your liver, kidneys, and digestive system. Saunas and hot yoga can be invigorating but are not a replacement for the body's natural detox processes.

Myth 6: Calorie Counters on Machines Are Accurate

The figure flashing before you on the treadmill isn't scripture. Machines tend to overestimate burn rates since they can't correct for body composition, age, sex, or effort. Ellipticals especially can overestimate calorie counts by more than 40%. Treadmills are closer to reality, particularly when you plug in your weight. But to be absolutely accurate, wearable heart-rate monitors and metabolic tests are much better.

Myth 7: Sit-Ups Alone Will Give You a Six-Pack

Sit-ups and crunches are core exercises that build strength but won't miraculously burn belly fat. Spot reduction, losing weight in a specific targeted area, has been debunked time and again. Visible abs depend on a combination of strength training, cardio, and a well-balanced diet to cut down overall body fat. A six-pack is as much about nutrition as it is about a gazillion sit-ups.

Myth 8: Cardio Always Burns More Calories Than Strength Training

Cardio may burn more calories while you're actually doing the exercise, but strength training has a strong after-effect. Due to excess post-exercise oxygen consumption (EPOC), weight lifting increases metabolism for several hours after you're done at the gym. In reality, a program that includes a mix of cardio and resistance training usually gives the best fat loss, performance, and long-term health results.

Myth 9: Maximum Heart Rate = 220 – Age

This equation is a common usage but infrequently accurate. It tends to overestimate heart rate zones for younger individuals and underestimates heart rate zones for older individuals. The American Council on Exercise stresses there's no such thing as the ultimate one-size-fits-all formula. If you need precision, laboratory testing or consulting with a coach gives way more useful numbers than a straightforward subtraction formula.

Myth 10: No Pain, No Gain

The catchphrase has motivational appeal, but pain is not the objective. Some soreness and discomfort are okay, but sharp or ongoing pain is a red flag for injury. Specialists emphasize listening to your body: it's possible to build strength by pushing through exhaustion, but pushing through actual pain can lead to long-term harm. Rest is equally essential to making progress.

Why Its Important To Rethink Fitness Advice?

Myths about exercise linger because they're memorable, simple to repeat, and in some cases based on half-truths. But holding on to them can hold us back—resulting in wasted effort, frustration, or even injury. The true intention isn't to train harder for the sake of it, but to train smarter.

Science shows us that fitness isn’t about rigid rules, it’s about adapting to your body’s needs, training consistently, and pairing exercise with good nutrition and rest. Whether you’re running, lifting, or doing yoga, the most effective routine is the one that balances effort with evidence.

Disclaimer: This article is for informational purposes only and should not be taken as medical advice. Always consult a qualified healthcare or fitness professional before making changes to your exercise routine, diet, or lifestyle. Individual results may vary.

Marathon runners have been held up as models of peak fitness. With their lean builds, strong hearts, and seemingly endless endurance, they embody the idea that extreme physical activity equals extreme health. But new research is challenging that perception. A recent study led by oncologists at the Inova Schar Cancer Institute in Virginia has revealed a surprising trend: marathon and ultramarathon runners may face a higher risk of developing colon cancer than the general population.

This finding is not only counterintuitive but also potentially life-saving, raising important questions about how extreme exercise affects the body in ways that go beyond muscle strength and cardiovascular fitness.

Dr. Timothy Cannon, an oncologist at Inova Schar, first noticed the potential link in his own clinic. He treated three patients, all under the age of 40, who were accomplished endurance athletes. These men and women didn’t smoke, didn’t drink, and had no family history of colon cancer. One was vegan. Yet each of them had advanced colon cancer. Despite aggressive treatment, all three later passed away.

“It didn’t make sense,” Cannon explained when he presented his findings at the American Society of Clinical Oncology (ASCO) conference. “They were the kind of people we’d expect to be the least likely to develop colon cancer.”

That anomaly drove Cannon and his team to explore whether there was a hidden link between extreme endurance running and colorectal cancer risk.

The research focused on 100 athletes aged 35 to 50 who had completed either at least two ultramarathons (50 km or longer) or five marathons. None had family histories of colorectal cancer or traditional risk factors such as smoking, obesity, or heavy alcohol consumption. When the participants underwent colonoscopies, the results were striking:

• 39% had at least one polyp
• 15% had advanced adenomas, a type of pre-cancerous polyp

By comparison, only about 1.2% of people in their 40s in the general population are expected to have advanced adenomas. The difference was significant and unexpected.

“These were athletes who, on paper, should have been the least likely to show these warning signs,” Cannon said.

Why Would Marathon Running Increase Risk of Colon Cancer?

The study stopped short of proving causation, but experts have floated several theories.

One explanation is that intense endurance exercise diverts blood away from the gastrointestinal tract to fuel muscles during long races. Over time, this may cause recurring oxygen deprivation in colon tissues, sparking cycles of inflammation and repair. Eventually, these repeated injuries could create an environment where abnormal cells thrive.

Another possibility is that endurance athletes may ignore early symptoms of colon cancer, attributing digestive changes or abdominal pain to normal “runner’s gut.” This delay in seeking medical help could allow cancer or pre-cancerous lesions to progress unnoticed.

In other words, the danger may not just lie in running itself but in the culture of endurance sports, where toughness and tolerance for discomfort are celebrated.

Early-Onset Colon Cancer on the Rise

The findings come at a time when early-onset colorectal cancer is already increasing worldwide. In the United States, colon cancer is now the second deadliest cancer among young women and the deadliest among young men. Cases among Americans aged 30 to 34 have risen by more than 70% in recent decades.

Globally, nearly 10% of new colorectal cancer cases are diagnosed in people under the age of 50. Researchers are still piecing together the reasons, with diet, lifestyle, environmental exposures, and genetics all under scrutiny. Cannon’s study adds another layer to the puzzle: could extreme physical activity play a role for a subset of young adults?

Does this research mean you should hang up your running shoes? Absolutely not, experts say. The health benefits of regular physical activity—including reduced risk of obesity, diabetes, and at least eight types of cancer—still far outweigh the risks. The concern lies specifically with extreme endurance athletes who log hundreds of miles per year and push their bodies to their physiological limits. For these individuals, it may be wise to:

• Stay alert to unusual gastrointestinal symptoms
• Seek medical attention for persistent abdominal pain, unexplained weight loss, or blood in the stool
• Talk to a doctor about earlier or more frequent colon cancer screenings, even without traditional risk factors

So Is Exercise A Friend Or Foe?

The irony is that exercise itself has been shown to reduce colon cancer recurrence in patients who have already been diagnosed. A separate three-year exercise coaching study found that participants had 28% fewer recurrences and were 37% less likely to die from any cause.

This dual role of exercise protective at moderate levels, potentially harmful at extremes—underscores how complex the relationship is between physical activity and cancer risk.

Cannon’s study is still preliminary. It lacked a control group, and the sample size was small. Future research will need to confirm these findings and explore mechanisms in more detail. Until then, oncologists are urging caution without alarm.

“We don’t want to discourage people from exercising,” Cannon emphasized. “But we also want runners to understand that being fit doesn’t make you invincible. If something feels off, don’t dismiss it.”

Marathon runners may look like the picture of health, but new research suggests that their extreme training regimens could carry hidden risks. With colon cancer already rising among younger adults, the possibility that endurance athletes face added vulnerability is too significant to ignore.