idk if this has something to do with circadian rhythm or hormones in the morning, but regardless if I go to sleep really late and get 4 hours of sleep or 8 hours, I notice when I train earlier I have so much more energy in my workouts. my workouts at 7 or 8 am after only 4 hours of sleep are way better than my workouts at 11am after the recommended amount of sleep? I feel groggier if I train later in the morning/ day, anyone know why this is? thanks!