In a day, people need to sleep about seven to eight hours. The goal is to restore vitality. If you do not sleep within 24 hours, the immune system decreases. But with regular exercise, plus knowledge of good sleeping techniques, and technological advances in uniformity, sleep can be shortened for up to two hours. So sleep time is only five hours. You can check this on Crazy Sales.
The extent to which the truth is, has not been proven. But modern humans are busy and live in big cities like Jakarta, sleeping like a passenger. In fact many reliable … Read the rest