The cold exposure practice will naturally modulate cortisol levels in the body, relieving stress and building up mental grit to deal with stressful moments.

Neurochemisty- Cold exposure will stimulate a 600% sustained increase in neurotransmitters like serotonin, dopamine, norepinephrine, and β-endorphin, which are important for regulating emotions, stress, and rewards. Some studies suggest that cold exposure may improve mood and cognition, decrease depression, and protect against neurodegenerative disease.

Muscle damage- Cold water immersion can reduce the amount of exercise-induced muscle damage, which can lead to less inflammation and soreness.

Cold exposure activates brown fat, or brown adipose tissue (BAT), which is a type of body fat that burns fat to produce heat. BAT activates right before you start to shiver.  Cold exposure can help reduce body fat mass (white fat). One study found that daily cold exposure for six weeks led to a decrease in body fat mass.

Decreasing our BFM and white fat is good and increasing our BAT is what we want.

Cold exposure may have an anti-tumor effect. One study found that cold exposure can starve tumor growth through adipose tissue activation, which competes and deprives cancer cells of glucose, thus inhibiting tumor growth in multiple cancer mouse models such as fibrosarcoma, breast cancer, colorectal cancer, melanoma, pancreatic ductal adenocarcinoma, and secondary liver cancer.

Decreasing our BFM and white fat is good and increasing our BAT is what we want.

Brain-derived neurotrophic factor (BDNF) The heat from a sauna increases the production of BDNF, a protein that promotes the growth of new neurons. BDNF also helps prevent brain degradation and improves neuroplasticity, which is important for learning and memory. Endorphins The warmth of a sauna triggers the release of endorphins, which are often called "happy hormones". Endorphins can help elevate your mood, suppress pain, and reduce stress. Heat shock proteins (HSPs) The heat from a sauna causes the body to release HSPs, which help protect and repair brain cells. Dynorphins The body releases dynorphins in response to heat, which can cause discomfort and agitation at first. However, dynorphins also set the stage for endorphins to have a greater effect on mood and the body.

Reduced cellulite Infrared saunas can help break down fat cells. Norepinephrine Regular sauna use can increase norepinephrine, a hormone that's related to attention and focus. Saunas can also improve respiratory function by relaxing the muscles in the lungs. People with asthma or chronic obstructive pulmonary disease often report improved symptoms while in a sauna.

Collagen production Infrared saunas can increase collagen production, which can help reduce the appearance of wrinkles and sagging skin. Improved circulation The heat from a sauna increases blood flow, which delivers more nutrients to your skin and can make it look healthier and more vibrant.

Blood vessel dilation: The heat from a sauna causes blood vessels to dilate, which can lower blood pressure.

Increased heart rate: The heat from a sauna can increase your heart rate to 100–150 beats per minute. Sauna therapy for hypothyroidism A 9-month study found that regular sauna therapy improved thyroid function and reduced antibodies in patients taking levothyroxine for hypothyroidism.

The sauna can cause a temporary increase in growth hormone levels. The amount of growth hormone released depends on the temperature, time, and frequency of sauna use. For example, one study found that two 1-hour sauna sessions per day for a week increased growth hormone levels 16-fold. sauna use may improve insulin sensitivity, as well as positively impact hormone production in the pituitary and pineal glands.