Say I have a quality workout where I go longer, or harder or faster than previously. Then that night I only get 4-5 hours of sleep. Does my body still make the adaptations I would hope for from such a good workout? If not I'm gonna jump out a window, cuz I don't sleep well in the Spring and I'm trying to build mileage.
Just F**king run! Bro you talk more then you workout.
It typically impacts my recovery from the previous day's run and the quality of my upcoming run. One good night sleep can fix it usually. The problem is if you feel lethargic, have bad form, and run like a fat kid. Then you might have busted yourself up. My knees and back will often hurt after those days of running on little sleep.
4-5 hours -- while you will feel like poo all day -- really isn't TOO bad. the real bad nights are like the 2-3 hour nights.
don't sweat it
I usually feel it Two days after a bad night of sleep rather than the next day
As your body enters into the non-REM deep sleep stage, your pituitary gland releases a shot of growth hormone that stimulates tissue growth and muscle repair.
Muscular recovery is required after intense exercise, particularly strength and endurance training, in which the muscles have been torn down to some degree.
In general, one or two nights of poor or little sleep won't have much impact on performance, but consistently getting inadequate sleep can result in subtle changes in hormone levels, particularly those related to stress, muscle recovery and mood. While no one completely understands the complexities of sleep, some research indicates that sleep deprivation can lead to increased levels of cortisol (a stress hormone), decreased activity of human growth hormone (which is active during tissue repair), and decreased glycogen synthesis.
Other studies link sleep deprivation with decreased aerobic endurance and increased ratings of perceived exertion.
So yes...not getting your sleep probably isn't good for you long term.
a night of little REST will. But scientists have shown that as far as purely physical effects, getting 7-8 hours of REST, even if you dont a wink, you will be capable of the same physical performance than someone who slept that 7-8 hours. Mentally, they dont necessarily hold up though.
Every night that I go longer, harder and faster I get very little sleep.