That may be because your sleep deficit is say 20 hours and your need 8 (6 if lucky) to break even so you need something like 10 hours a day for 10 days to catch

That may be because your sleep deficit is say 20 hours and your need 8 (6 if lucky) to break even so you need something like 10 hours a day for 10 days to catch up. All this is to say I occasionally feel groggy but if I consistently sleep “a lot” I feel great after a few days.