Question: Is it true that you actually become more tired if you sleep longer than five or six hours?
Sri Chinmoy: It is not a question of five or six hours, but if you really sleep more than your body's necessity, then a disproportionate amount of lethargy attacks your body. Because of this merciless attack, you feel more tired.
From:Sri Chinmoy,Sleep: death's little sister, Agni Press, 1974
Sourced from https://srichinmoylibrary.com/sds