1.The weekend lie in will make you more and more lazier, more and more tired.- p5 o6 p, s/ {/ c+ J/ J
2.The daily circadian circle adjust the body's biologicall clock.+ _2 B7 K- \9 @: `" S9 M
3.It's effective to sleep early than late.
$ U3 C' }7 i$ E. o4.If you want to balance the sleep of workdays and weekends, the best way is to sleep at least 8 hours.
0 |9 S0 G4 P: `1 y5.为了保证我们的睡眠,我们需要在平时起床时的前8小时内睡觉。 |