A thermal image of an average human body shows that the upper body near the heart maintains a warm temperature and areas further from the heart maintain a much lower temperature. This is natural to protect heart and head, which are the most important organs. However, this imbalance causes many health threats.
LBTT fixes this imbalance by warming the lower body and increasing blood flow to the whole body without raising blood pressure or feeling of suffocation, while heart and head stay cool.
From "The Onliest and Deepest Secrets of the Medical Art." By Hermann Boerhaave, one of the most influential clinicians and teachers of modern physiology. Modern physiology owes much to the work performed during the 18th century by the Dutch physician Hermann Boerhaave.

When he died in 1738, he left behind a sealed book with the title "The Onliest and Deepest Secrets of the Medical Art." The book, still sealed, was auctioned for $20,000 in gold. When the new owner broke the seal, he found that 99 of the 100 pages were blank. Only the title page bore his handwritten note by the "author": "Keep your head cool, your feet warm, and you'll make the best doctor poor." This practice is called the Lower Body Thermal Therapy (LBTT) and is considered as one of the most effective ways to improve one's health.
