Children need eight to nine hours of sleep to recover. Between the ages of 22 and 55, a person leads an active life: works a lot, plays sports, has a family and processes a lot of information. Energy expenditure is restored only after seven to eight hours of sleep, the neurologist told Championship.
The need for sleep decreases after 65 years of age and the need for rest is five to six hours. The body does not need much time to recover. The amount of information consumed also decreases; people of retirement age are often able to sleep during the day.
Also, the duration of sleep is reduced by chronic illnesses. Some diseases cause insomnia and sleep disorders.