fasting, and environmental settings such as uncomfortable bed go a long way in overcoming excessive sleepiness/hypersomnolence. The above-mentioned factors, along with overwork, old age, vatika diseases, vatika constitution
तमोभवा श्लेष्मसमुद्भवा च मनःशरीरश्रमसम्भवा च| आगन्तुकी व्याध्यनुवर्तिनी च रात्रिस्वभावप्रभवा च निद्रा ||५८||
[Origins and types of sleep] Sleep is of seven types, categorized by its cause: Tamas, vitiated kapha, mental exertion, physical exertion, exogenous factors, diseases, and normal (nighttime).
Natural sleep (sleeping at night) is the best form of sleep. This is also known as Bhutadhatri, or “that which nurses all the living beings." The form of sleep that is caused by tamas is the cause of all sinful acts while the remaining types are observed in specific situations and ailments
[Summary] Now, the summing up verses – Acharya Punarvasu (Lord Atreya), the son of Atri, has explained the contents in the chapter on “eight types of undesirable constitutions” as given below: -Enumeration of undesirable constitutions. -Two most undesirable types of persons. -The causes of undesirability.