Evolutionary anthropologist Herman Pontzer at Duke University was enthusiastic about studying the metabolism of Hadza, a tribe of modern hunter-gatherers in Tanzania. Not uncommon for anyone to assume that they would be burning calories way more than the people who are at a desk job. However, when the results came out, it was rather surprising. Hunters and gatherers are known for a highly active lifestyle, jogging, tugging, lifting, and walking throughout the day. But, the results point out that it does not make them burn more calories than an average person.

When Pontzer and his team compared the calories burned by an average Hadza to that of an average office worker in the US, the totals were almost identical. In an interview with the Washington Post, Pontzer reveals that the reason for this is that after immense activity, our body gets used to the routine and starts saving calories.

What does this really mean?

People who are really sedentary are burning the same number of calories as to people who are always hitting the gym and are working out. This discovery really changes the mindset around metabolism.

Pontzer explains. "If you exercise today, you’ll burn more energy today. But if you really change your lifestyle and start exercising regularly and that becomes your new normal, your body adjusts, and you wind up not burning more calories overall. Basically, if you spend more energy on exercise, your body finds ways to spend less on other stuff. But here’s the good news. The adjustments the body makes, which include reductions to inflammation and stress reactivity, maybe a big part of why exercise is so good for us."

But can we do something about it and boost our metabolism? Pontzer says no. Despite going on a high-carb, low-carb, or high-protein diet, metabolism will not be increased as none of these diets have resulted in a measurable effect on calories burned per day. However, it is important to understand that while metabolic adaptation happens, exercise does have many benefits and this study mainly looks at the total energy expenditure.

How can you then actually lose weight?

The answer lies in a calorie deficit. If you consume fewer calories as compared to the calories you are burning, it helps you lose weight. Pontzer points out that one reason why our metabolism slows down is because we get more stressed, this is where exercise fits in. It helps reduce inflammation from the adjustment it makes and also reduces stress reactivity.

Pontzer says that while it is true that teens and kids burn the most calories, the calorie count altogether is a small amount. Furthermore, though our body responds differently to food when in middle age as compared to teenage or in 20s, metabolism does not really slow down until after 60. The factor that really comes into play is stress, which impacts our lifestyle habits. Exercise alone however cannot make you lose weight, lifestyle changes, along with a calorie deficit, or a diet in accordance with your body type is also important for weight management.

Walking is the simplest form of exercise. While it is something that we are genetically designed to do, there has been debate on its efficiency as a full-fledged form of exercise. In the latest development, scientists in Japan have taken this activity and supercharged it into a research-backed, age-defying fitness routine that's going viral across the world. Called Interval Walking Training (IWT), its health benefits have not stunned even the most dedicated gym goers.

So What Exactly IS Interval Walking Training?

Developed by exercise physiologist Dr. Hiroshi Nose, this method alternates between three minutes of brisk walking and three minutes of easy pacing, repeated five times in a 30-minute session. As per its creators, it is all about small bursts of energy. The results? A fitter heart, stronger legs, and even a shot at turning back the biological clock.

How Is It Different From Regular Walking?

Most people associate High-Intensity Interval Training (HIIT) with gruelling sprints or gasping for air on a spin bike. But IWT flips the idea by using something as accessible as walking. And yet, this deceptively gentle routine does more for your metabolism, cardiovascular health, and fat burn than hours of slow-paced activity.

The technique has a empirical backing too. Scientific trials in Japan have shown that those who practised this method four times a week for three months saw measurable improvements in cholesterol, blood pressure, blood sugar levels, and even muscle strength. One 68-year-old participant had his heart rate shoot up to 130 bpm during the fast intervals — a pace comparable to moderate cycling.

Can It Reverse Ageing?

The creator of this walking method, Dr. Nose, even claims that consistent IWT participants improved their aerobic power and thigh muscle strength by 20% — enough to make you feel ten years younger. For many, symptoms of lifestyle diseases like hypertension and obesity dropped significantly, and depression scores were halved.

Why Does Japanese Walking Work So Well?

It is all in the timing and intensity. During fast-paced intervals, your body taps into glycogen stores and increases oxygen demand, triggering a cascade of metabolic benefits. The alternation between effort and recovery mimics the rhythm of elite athlete training, just with lower impact, making it ideal for seniors, beginners, or anyone recovering from a sedentary slump.

This burst-and-breathe pattern revs up your heart rate, challenges muscle coordination, and improves balance, especially in older adults. The circulation boost helps detoxify organs, enhance nutrient absorption, and sharpen mental clarity, making it not just a physical workout but a rejuvenating full-body experience.

Variations For Every Lifestyle

Want to take it up a notch? Add light weights to your walk to tone muscles and increase calorie burn. Want to spice things up indoors? Try zig-zag paths, backwards walks, or figure-8 routes to engage underused muscles and keep your mind focused. These patterns not only improve neuromuscular coordination but also keep boredom at bay. So the next time you’re thinking of skipping your workout, remember: A smarter walk could be your shortcut to a longer, stronger, and more balanced life.

Yoga plays a very important role for our health- It not only helps us strengthen our body, but it also increases our endurance and mental tenacity. It is an ancient practice that involves asanas, breathing exercises as well as meditation. It has become very popular in recent years as people learn about its accessibility as well as the benefits of doing it. Other aspects of yoga include increasing organ capacity like strengthening your lungs.

How Yoga Increases Lung Capacity

A 2015 study published in the International Journal of Yoga people with heart conditions like coronary artery disease (CAD) often have weaker lungs. We did a study to see if yoga, including breathing exercises (Pranayama), could help. We split 80 heart patients into two groups: one did yoga for three months along with their usual medicine, and the other just took medicine.

The results showed that the yoga group had better lung function and even improved heart health, like lower blood pressure. This means yoga can be a helpful extra treatment for people with heart disease.

According to the American Lung Association, Yoga is a great gentle exercise that combines physical poses (called asana) with breathing exercises (called pranayama). Both parts help keep your body and mind healthy.

Doing basic yoga poses can boost your energy and strengthen muscles, but don't push yourself if it feels uncomfortable. If you're new to yoga, especially if you have lung disease, take it easy and avoid any poses that make it hard to breathe. Always check with your doctor before starting any new exercise, including yoga. If you join a yoga class, make sure the teacher is qualified and understands your specific needs. Many classes are designed for people with health conditions.

Yoga Poses That Strengthen Our Lungs

Cobra Pose (Bhujangasana)

This gentle pose involves arching your back like a cobra. It helps to open up your chest and makes your spine stronger. By expanding your rib cage, it allows you to take deeper breaths, which is great for your lungs.

Bow Pose (Dhanurasana)

In this pose, you lift both your chest and legs like a bow. It deeply stretches the front of your body, including your chest and belly. This helps your lungs become more flexible and can make breathing easier if you have issues.

Camel Pose (Ustrasana)

This pose involves arching your back and reaching for your heels. It strongly opens your chest and throat area, which gets your breathing system going. It encourages full, big breaths and can help clear out your air passages.

Half Lord of the Fishes Pose

This is a seated twisting pose. It gently squeezes and then releases your insides, which helps blood flow around your lungs. This pose can improve how well you control your breath and helps to clean out your breathing system.

Pranayama

This isn't just one pose, but a group of special breathing exercises. Techniques like breathing through one nostril at a time or taking deep belly breaths directly improve how your lungs work, helping you take in more oxygen and feel calmer.

Revolved Side Angle Pose

This standing twist stretches the muscles between your ribs. This makes your chest more flexible, allowing for deeper breaths when you inhale. It's a great way to improve your lung capacity and make breathing more efficient.

Bridge Pose (Setu Bandhasana)

In this pose, you lift your hips off the ground, forming a bridge shape. It gently opens your chest and stretches the front of your body. This pose can help ease chest stuffiness and make it simpler to breathe.

Yoga is a great way to wind down and relax. While exercising after a long day may seem counterproductive, there are many other reasons why one should do yoga if they are tired and overwhelmed. There are certain poses and movements that help you find your rhythm, revitalizing you and helping your body calm down and relax. Practicing this before ending your day can help you get a restful sleep, instead of the hurried and uncomfortable sleep you get when you crash out.

These grounding practices can be incredibly soothing for the nervous system, helping to shift you from that 'fight or flight' mode into a state of calm and rest. They are comforting for your mind and body, preparing you for a peaceful evening and a restful night. So, if you're feeling wired but tired, these grounding yoga poses are your invitation to unwind, find your center, and let go of the day's stresses.

Child's Pose (Bālāsana)

Gently rest your forehead on the mat with your knees wide or together, and arms stretched forward or alongside your body. This pose calms the brain and helps relieve stress and fatigue. It's like a gentle hug for your insides.

Legs-Up-the-Wall Pose (Viparita Karani)

Simply lie on your back and prop your legs up against a wall or chair. This inversion helps to drain stagnant energy from your legs and feet, promoting relaxation and easing tired legs. It can also soothe the nervous system.

Supported Bridge Pose (Setu Bandhāsana Variation)

Lie on your back with knees bent and feet flat on the floor. Lift your hips and slide a block underneath your lower back for gentle support. This opens the chest and front body while remaining passive and calming. It's a gentle way to release tension.

Supine Spinal Twist (Supta Matsyendrāsana)

Lying on your back, draw one knee towards your chest and gently guide it across your body, keeping your shoulders grounded. Look in the opposite direction of your knee. This gentle twist releases tension in the spine and hips, promoting relaxation. It feels like a gentle wringing out of stress.

Butterfly Pose (Baddha Konāsana)

Reclined Variation: Lie on your back and bring the soles of your feet together, allowing your knees to fall open gently. You can place pillows or blocks under your knees for support. This pose gently opens the hips and groin, areas where we often hold tension. It's a soft and releasing stretch.

Corpse Pose (Śavāsana)

The ultimate relaxation pose! Lie flat on your back with your arms and legs slightly apart, palms facing up. Close your eyes and consciously release any tension in your body, allowing yourself to sink into the support of the floor. This pose allows your body and mind to fully rest and integrate the benefits of your practice. It's like hitting the reset button.

Supported Savasana Variation

Place a bolster or rolled-up blanket under your knees or thighs in Savasana. This can provide extra comfort and support, allowing for deeper relaxation. Sometimes a little extra cushioning makes all the difference in letting go.