I was just at a café with a friend last week, and she deliberated over the menu, glancing longingly at the hot chocolate part. "I wish I could have one," she sighed, "but it's 40 degrees outside, won't it make me hotter instead?" Her problem made me stop and think. We've always been led to believe that cold beverages are the best bet on hot days, but her craving piqued my interest. Might there really be a good reason she should have that hot chocolate, yes, even in the blistering heat?It turns out science may have her back. When the mercury goes up and the sun beats down, most of us reach for cool, soothing beverages- ice water, lemonade, or an iced coffee. The idea of sipping something hot during a heat wave is counterintuitive. But in many countries such as Bangladesh, India, Japan, and Saudi Arabia, it's nothing unusual for individuals to drink hot drinks even during the heat of the summer. In fact, traditional Chinese medicine even prescribes that certain teas have a cooling effect on the body, even if they're consumed hot. So can hot drinks actually cool you down when the weather gets really hot? It happens that the science behind this will amaze you.How Do Hot Drinks Have A Cooling Effect?At first it appears totally irrational—harking back a cup of hot on a scorching hot day would probably make you hotter, right? Well, not precisely. When we consume something warmer than the temperature of our bodies, we are, naturally, going to initially feel a boost in heat. But our bodies are highly adjusted to keep our internal temperature stable, a process labeled as thermoregulation. That's where things get fascinating.Hot drinks stimulate a specific receptor in our nerves called TRPV1. TRPV1 is the receptor for heat and alerts the body to cool down. Therefore, whenever we consume a hot drink, our body responds by initiating a cooling response- sweating but sweat is not only a pesky side effect of having a hot drink it is also essential to the survival of the body in hot climates. As sweat evaporates from the skin, it takes heat with it and cools the body. The secret to this method is having a breeze or air flow to facilitate that sweat evaporating effectively.This is the reason that on a dry but hot day, sipping a hot drink and sweating will actually cool your body down, as long as there is sufficient airflow to allow for evaporation.Humidity vs. Dry HeatThough hot drinks can actually chill you down, there is an important caveat here—the humidity index. Under dry heat, evaporation works better, enabling the sweat to cool you down quicker. Under conditions of high humidity, though, the air will be filled with moisture, hence it is not as easy for sweat to evaporate. For such a weather, hot beverages might not act as coolers, and on the contrary, they might leave you worse.A 2012 study published in Acta Physiologica examined the effects of hot drinks on cyclists in a dry, low-humidity environment. The researchers found that when the cyclists consumed hot drinks, they sweated more, and their body temperature dropped due to efficient evaporation. This study supports the idea that in the right conditions namely, dry heat, a hot beverage can provide a temporary cooling effect.In contrast, if we consume something cold, our body temperature decreases, and thus the brain sends a message that it should decrease sweating in an effort to get back to homeostasis. This is the reason why cold beverages give an instantaneous cooling sensation but are perhaps less effective at assisting your body to control temperature in the long run, particularly in humid environments.Hydration is Key to SweatingAside from inducing sweating, hot beverages can also assist in hydration—a very important part of cooling off. Although cold drinks are more commonly linked with hydration, the truth is that consuming hot beverages can be equally as hydrating as water, particularly when had in moderation.Keeping yourself well-hydrated is important so that your body can sweat efficiently. Without sufficient fluids, your body will not be able to generate the sweat needed for cooling. Indeed, in certain instances, having something hot, such as tea, might even aid in replenishing lost fluids and electrolytes when sweating. Tea consumers who use additives such as sugar, salt, or cream are also consuming extra electrolytes—much like you would obtain from sports beverages.What Role Electrolytes and Salt Play?Electrolytes are necessary to keep your body's fluids in balance, and they also play a major role in cooling you down when the weather is hot. When we perspire, we lose sodium and potassium electrolytes, and if these are not replenished, it can weaken the body's capacity to regulate temperature. For this reason, some experts advise drinking fluids like hot tea with sugar or salt added to assist in replenishing electrolytes.Research from a 2017 study published in Safety and Health at Work found that outdoor workers, particularly those in high-heat environments, often prefer cold drinks but avoid them due to the belief that cold beverages might shock their system. As a result, they tend to drink less overall and are at risk of dehydration. This highlights the importance of staying hydrated, regardless of whether you’re drinking hot or cold beverages.It's also to be noted that the consumption of hot drinks during hot climates isn't particular to some geographical locations; it's actually an entrenched tradition among several cultures around the globe. It's for instance common to take hot tea or coffee during summers in the Middle East and portions of Asia. Not just that, it assists in cooling down the body as well, and it also happens to be an experience many like to relish.Conventional knowledge in nations such as India tends to promote the consumption of hot chai as a means of balancing the body's internal temperature. Indeed, in certain cultures, it is believed that the intake of hot drinks during hot days will balance the body's internal heat, restoring comfort and harmony.Why You Should Drink What Works for You?Ultimately, the idea of sipping hot beverages to cool down is scientifically supported- provided the circumstances are right. The cooling action is largely because of the sweating response of the body, which, in turn, cools the body down. Nevertheless, it should be noted that this action is most effective in dry heat, where sweat can evaporate efficiently. In humid environments, you may find cold beverages provide a faster and more perceptible cooling sensation. In the end, whether you like hot or cold drinks in the heat, hydration is the most critical component of keeping your body's temperature regulation intact. With hotter summers and shifting climate patterns, the science of hot drinks and cooling might be more pertinent than ever.5 Surprising Hot Drinks That Might Actually Help You Cool DownWhile the idea of sipping something hot on a blazing day sounds counterproductive, certain traditional beverages are designed to support your body’s natural cooling mechanisms. Here are five hot drinks from around the world that may help your body beat the heat:1. Masala ChaiOften consumed piping hot in the peak of summer, masala chai isn't just about the comforting blend of spices. The heat triggers sweat production, and when that sweat evaporates, it cools your body down. The added spices like ginger and cardamom also help in digestion and hydration.2. Mint TeaServed hot even in desert climates, mint tea is both soothing and cooling. Mint leaves contain menthol, which tricks the brain into feeling cool, and the warm liquid encourages perspiration, assisting in thermoregulation.3. Ginger TeaUsed in traditional Chinese medicine, ginger tea is said to balance internal heat and cold. It boosts circulation and supports gentle perspiration, which helps regulate internal temperature—especially when consumed in dry climates.4. Hot Barley TeaKnown as mugicha in Japan and bori-cha in Korea, this caffeine-free roasted barley tea is served hot or cold. When hot, it encourages mild sweating and supports detoxification, helping you cool off from the inside out.5. Herbal Infusions with Lemon Balm or ChamomilePopular in European households, these herbal teas calm the nervous system and promote sweating in a gentle, regulated way. They're ideal for a warm summer evening when you want to wind down and beat the residual heat.Each of these drinks comes from cultures that have long endured hot, dry climates and their time-tested practices show that sometimes, the smartest way to cool down is by warming up first.