You may regard the act of sweating as an undesirable bodily function, however there are actually a number of benefits of sweating, even when you’re not exercising. It should be noted that if you sweat a lot during any sort of physical activity, you should stay hydrated by drinking water prior to, during and after exercise, in order to prevent becoming dehydrated.
Let’s look at some of the benefits of sweating in more detail.
Lower Blood Pressure
Sodium is excreted by the body when sweating, which is beneficial to those on a high sodium diet. Both high blood pressure and an increased risk of heart disease are linked to high sodium diets, meaning that sweating can actually help to lower high blood pressure. The School of Medicine and Public Health  recommend sweating induced by a sauna as an effective and healthy way to lower high blood pressure, providing you stick to 15 to 30 minute sessions three to four days a week.
Sweating induced by exercise is also a fantastic way to keep your blood pressure under control.
Environmental toxins including arsenic, cadmium, mercury and lead, can accumulate in the body causing developmental and health problems. The Journal of Alzheimer’s Disease  review published in 2010 discovered that mercury, which is present in seafood and fish, can potentially cause neurogenerative disorders, including Alzheimer’s disease. These toxins are found in very small concentrations in sweat, meaning that they are excreted from the body through the process of sweating. The Journal of Environmental and Public Health  review published in 2012, discovered that regular sauna sessions and sweating helped the body to normalize high levels of mercury. The authors involved in this review conclude that sweating ought to be considered as an effective method of detoxification and excretion of toxins that accumulate in the body.
Increased Caloric Expenditure
When you sweat, it signifies that your body is burning more calories than when you’re not sweating. This is beneficial for those who are trying to maintain or achieve a healthy body weight. Sweating is commonly caused by exercise, which is great for boosting your body’s overall energy expenditure. The American Council on Exercise  state that more calories are expended by the body, in hot temperatures, due to sweating. Therefore working out in warmer temperatures can help you to burn more calories than when exercising in cooler temperatures.