Why do we sweat?

Sweating is an essential process our bodies use to maintain health and function. Though often thought of as an indicator of output or a tool for weight loss, sweating is primarily a method of regulation. In this blog, we’ll explore why we sweat and the mechanisms behind it.

Why Do We Sweat? Everything You Need to Know

TEMPERATURE

Sweat primarily functions as a cooling mechanism, which means it’s a reaction to your body overheating. The amount you sweat can be influenced by temperature, humidity, hydration, and even your individual sweat gland activity, which comes down to genetics. You might sweat profusely in a hot yoga session but only moderately lifting weights in a cool, air-conditioned space with an in-home or virtual personal trainer.

The human body functions best within a narrow temperature range; “Even just a few degrees up is a fever. So, we have to keep our body temperature in a very tight window, and sweat is how we do it” (Sarah Everts, author of The Joy of Sweat, CBS News, 2023). When we exercise, are exposed to heat, or experience stress, our body temperature rises. To prevent overheating, the hypothalamus (located in the brain) signals sweat glands to release sweat onto the skin’s surface. As sweat evaporates, it cools the body down.

HYDRATION

“Sweat primarily consists of water but contains small amounts of electrolytes, minerals, pheromones, proteins, and amino acids” (Health, 2023). This loss needs to be replenished to prevent dehydration and ensure that our cells, muscles, and organs function properly. Our in- home personal trainers in Toronto always encourage clients to bring water to their workouts. If profusive sweating occurs or a workout lasts longer than an hour – especially in hot and humid conditions – it’s crucial to replenish sodium to maintain performance and prevent hyponatremia (low blood sodium levels). Sports drinks, supplements, and salt-rich foods can assist with this process while preventing cramps, dizziness, fatigue, and other potentially dangerous symptoms.

DETOXIFICATION & SKIN HEALTH

The primary organs responsible for detoxification are the liver and kidneys, full stop. Don’t buy into the detoxification hype pushing special teas or expensive saunas. That said, sweating can help expel some toxins and waste products from the body. While not a major detoxification pathway, it contributes to overall bodily cleanliness. Sweating also benefits the skin by opening your pores and flushing out dirt and impurities. This can help reduce acne. However, if sweat is

not washed off, it can mix with bacteria and oils on the skin, potentially leading to clogged pores and breakouts. Try to hit the shower ASAP after a sweaty in-home or virtual personal training session.

WEIGHT

While sweating can result in a temporary decrease in body weight, this is due to fluid loss, not fat loss. “On average, you may lose about 2 liters of fluid while exercising” (Cleveland Clinic, 2023). This can lead to a temporary drop in weight immediately after a workout, sauna, or hot day, but this is temporary and will be regained once you rehydrate. True weight loss involves burning calories and reducing body fat, achieved through regular exercise and a balanced diet. Nielsen Fitness offers in-home personal training in Toronto, Collingwood, Hamilton, London, and Ottawa – and virtual personal training everywhere – to support the achievement of your fitness goals, including weight loss.

STRESS

Sweating is triggered by physical factors as well as emotional responses like stress and anxiety. This type of sweating, often occurring in the palms, feet, and underarms, is linked to the body’s fight-or-flight response. Managing stress through relaxation techniques, mindfulness, and regular exercise with an in-home or virtual personal trainer can help reduce this type of sweating.

FINAL WORDS

Understanding why we sweat can help us manage our health. It’s easy to overlook the details of daily function, but the more familiar you become with what responses are healthy for you, the better. If you’d like further support on your health journey, first workouts are zero pressure and always free. You can book yours here