Is 2 hours of sleep enough for a day July 8, 2019 16 32 64 128 Is 2 hours of sleep enough for one day Is 2 hours of sleep enough for 1 day Is 5 hours of sleep enough for 2 days Is 4 hours of sleep enough for 2 days Is 6 hours of sleep enough for 2 days Is 2 hours of sleep enough How many hours of sleep do you need for students