Are People Who Sweat a Lot Really Unfit?
Hardly any other bodily function comes with as many prejudices attached as sweating. People who sweat a lot are supposedly unhygienic and not physically fit. At least, that's what's often claimed. In reality, sweating is a completely normal and, above all, essential process — without it, we'd even be in danger in everyday life.
Why does the human body sweat?
Over the course of evolution, the human body has developed a whole range of processes designed to protect it. Sweating is one of them. By releasing sweat, the body regulates its own temperature. Seen this way, sweating can even be described as the body's own cooling system. So if you sweat a lot, that doesn't automatically mean you're out of shape. In fact, it can be read as a sign that your body is responding ideally to the strain of exercise and taking steps to cool itself down. To do this, it releases moisture in the form of sweat through the skin. There, it evaporates, producing the desired cooling effect. This is essential for your health. If the body isn't cooled sufficiently, various risks can even arise.
Since sweating is an essential part of the body's heat regulation, you should try to avoid constantly wiping it away while you exercise. Sweat should stay on the skin so it can evaporate there and trigger the cooling effect. That's why it's not a good idea to wipe your sweat away every couple of minutes, even if you find it annoying. Endurance sports are the exception here, though. In that case, you should make a point of wiping your body down from time to time, or even pouring water over yourself. The reason for this lies in the salt particles contained in sweat. If you sweat over a long period, there's a risk that a thin layer of salt will form on your skin once the sweat evaporates. This can clog your pores and significantly affect further sweating.
Sweating can even be trained
Sweating a lot or sweating quickly doesn't mean you're out of shape at all. In fact, studies have shown that regular exercise can even train the body to react quickly to a rising body temperature. The fitter your body is, the faster it starts to sweat under exertion. That's because regular physical exercise trains the body to respond to its cooling needs.
Even so, people who sweat a lot shouldn't take this as proof of their physical fitness. While a trained body does react faster to a rising body temperature, it also releases sweat in a much more measured way than an untrained body does. That's why sports physicians say that trained people sweat more efficiently than untrained people. This can even be demonstrated with sweat tests. The composition of sweat is fairly simple: 99 percent of it is water. The remaining part also contains electrolytes. The less trained a body is, the more important electrolytes it loses when sweating.
So seen this way, sweat can certainly be used as an indicator of a person's fitness - though not because of how much they sweat, but purely because of what it contains.
Is excessive sweating unhealthy?
There's no blanket answer to this question. Whether you sweat comparatively more or less than other people is mainly down to genetics. On average, every person has around 300 sweat glands per square centimetre of skin. However, these figures can vary considerably from person to person, which is why everyone sweats differently. That said, illnesses and being overweight can also influence how active the sweat glands are. When it comes to excess weight, it's worth noting that the body has to work harder to do the same tasks because of the extra weight it's carrying, compared with a slimmer person. From this angle, it becomes clear that heavy sweating can indeed be an indicator of a lack of fitness.
Sweating too little is even dangerous
From a medical point of view, it should finally be pointed out that sweating too little, or not at all, is unhealthy and can even be dangerous. As soon as body temperature rises, it's essential for the body to respond and take countermeasures. This is primarily about releasing heat through the skin and using sweat to trigger an additional cooling effect. After all, sustained performance is only possible at a normal body temperature. If this effect doesn't happen and the body heats up without being cooled, the circulatory system can, in a worst-case scenario, even collapse. The cause of this lies in the metabolism, which can only work effectively at a normal body temperature. If the body overheats due to a lack of sweat, this can have a negative effect on the metabolism.
To keep your body's own cooling mechanism working properly, you need a regular supply of fluids. This is especially true when you're exercising. While the body releases between half a litre and a full litre of moisture in the form of sweat in everyday life, this figure rises significantly during physical exertion. So for training sessions lasting longer than an hour, you should always make sure you have enough to drink with you.
Conclusion
Sweating is a normal process in the human body that stops us from overheating under physical strain. There are other causes, such as being overweight or having certain illnesses, that can contribute to excessive sweat production, but these are the exception. So the rumour that untrained people sweat more often and more heavily simply isn't true. If your body reacts quickly with sweating when you're under strain or in high temperatures, there's no need to worry. In fact, it's a sign that your body is working exactly as it should, and that your natural cooling mechanism is doing its job.
