The dances of WHIRLING DERVISHES are practiced in countries where the longevity is much higher than in the average population of the globe. One can explain it by the fact that the brain is bathed in cerebrospinal fluid that nourishes it. These body rotations around its vertical axis mobilize this liquid, thus causing a better nutrition and detoxification of the brain. That is why one notices a cerebral rejuvenation from the beginning of their practice (no risk of dizziness and nausea by the techniques we indicate). As a result of that action on the nervous system, some forms of rheumatism are cured, and some neurological diseases, even congenital ones, have been improves.