A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atom s that are held together by chemical bonds.
Some studies have shown that your deep sleep should at least be 20% of your overall sleep. It means that since most adults need 8-9 hours of sleep, they will need about 1.6-1.8 hours of deep sleep to feel fully functional next day. However, the time of deep sleep is changed and that's mainly due to the change in the sleep need of different group of people. For instance: Age Group.
* Take the total number of hours you sleep and divide it by 1.5 (one and one-half hours of sleep). If you sleep an average of six hours per night, your sleep is divided into approximately four 90-minute sleep cycles.t takes 45 minutes to float down into the deepest point of your first sleep cycle. If youâre awakened while in this stage of sleep, youâll feel very disturbed. But as soon as you reach this deep phase, you start on your way back up the right side of the âVâ toward a lighter sleep.