Sleep Quantity

How much sleep do we need and can we catch up on lack of sleep is some of the questions scientist that study the biological and psychological impact of sleep on humans. In average we spending about one third of our life, or 24 years, sleeping. it looks like seven to eight hours of sleep at night is optimal amount for grown-ups, less and more than that will put you in risk for heart and other diseases. individual differences do exist and discussed in the video.