Ia Gusmiwati
More ideas from Ia
Website for calculating what time you should go to bed depending on what time you have to get up. It's not based on how many hours of sleep you need but rather where in the cycle you would wake up.    Waking up in the middle of a sleep cycle leaves you feeling tired and groggy, but waking up in between cycles lets you wake up feeling refreshed and alert! -- SO NEAT

Sleep cycles & a calculator that tells you the best times to fall asleep depending on what time you need to wake up in the morning. How interesting- if you need to be up at this says to go to sleep at either or due to different sleep cycles.