Human circadian sleep rhythms are closely linked to changes in body temperature. Body temperature typically drops gradually during the night, signaling to the brain that it's time to rest. However, soaking in a whirlpool spa hot tub increases your body's surface temperature, causing your capillaries to dilate. Afterward, your body temperature drops rapidly.

Promotes Lymphatic Detoxification The lymphatic system is a vital network for immunity and toxin filtration. The hydrotherapy and heat therapy of a whirlpool spa hot tub can accelerate lymphatic flow, helping to transport waste products from the intercellular spaces to the lymph nodes for processing and elimination.

Safety hazards of falling asleep in a whirlpool spa hot tub: 1. Risk of drowning after loss of consciousness 2. Hyperthermia-induced fainting and hypotension 3. Risk of dehydration and electrolyte imbalance 4. Hot water causes a sluggish central nervous system response