The Prophet (PBUH) recommended ablution before going to bed. Yoga experts also encourage washing of hands, arms, eyes, legs, mouth and genitals before sleep with cool water for a deep sleep. Ablution stimulates biological rhythms of the body and specifically Biological Active Sports (BASes) which are similar to the idea behind Chinese reflexo-therapy. It is a treatment which includes hydro-massage of the BAS, their thermal and corporal stimulation. It is also established that blood circulation at the limbs is weaker because they are far from the center of the blood pumping heart. Therefore, their washing activates blood circulation at these remote areas of the body, making the person more vigorous.