The Wall Street Journal explains why sleeping in on the weekend isn’t as helpful as you think.
Levels of the stress hormone cortisol increased steadily during sleep-restricted weekdays compared with the control period, and didn’t completely return to pretrial levels after two eight-hour sleeps. Two markers of inflammatory activity measured in blood tests followed a similar pattern.
this should be dropped off this feed since you need a subscription to WSJ to read the full article! 🙁