The document discusses the importance of hygiene or sadachar according to Sri Sri Thakur Anukulchandra. It describes three types of sadachar - physical, mental, and spiritual hygiene. Physical hygiene involves maintaining cleanliness and sanitation to prevent infectious diseases. Mental hygiene requires keeping a clean mind by following a satguru. Spiritual hygiene means developing an unrepelling attachment to God through practices like meditation. Maintaining proper sadachar can prevent life-threatening diseases like heart attacks by balancing nitric oxide and super oxide in the body.