> we found ... zero correlation with fitness, which I must say was disappointing ...” Grossman [3.091 - Solid-State Chemistry, who initially promoted the study to find this other correlation] says
> it’s the sleep you get during the days when learning is happening that matter most
> there appears to be a certain cutoff for bedtimes, such that going to bed later results in poorer performance, even if the total amount of sleep is the same ... if you go to bed after 2, your performance starts to go down even if you get the same seven hours
> those who got relatively consistent amounts of sleep each night did better
> The overall course grades for students averaging 6.5 hours of sleep were down 50% from other students who averaged just one hour more sleep. Similarly, those who had just a half-hour more night-to-night variation in their total sleep time had grades that dropped 45 percent below others with less variation.
> it’s the sleep you get during the days when learning is happening that matter most
> there appears to be a certain cutoff for bedtimes, such that going to bed later results in poorer performance, even if the total amount of sleep is the same ... if you go to bed after 2, your performance starts to go down even if you get the same seven hours
> those who got relatively consistent amounts of sleep each night did better
> The overall course grades for students averaging 6.5 hours of sleep were down 50% from other students who averaged just one hour more sleep. Similarly, those who had just a half-hour more night-to-night variation in their total sleep time had grades that dropped 45 percent below others with less variation.