We are often t___ it's important tp get e____ sleep,but do we know why?It's clear that less we sleep,the w___ we perform in everyday life.
Have you ever felt t___ in the middle of the day,e___ after lunch?Resears have found that it may be h___ to sleep twice a day.
Not getting enough sleep has serious e___ on our brains ability to work.If you go w___ sleep,you might have problems with your m___ or with your concentration.
The a___ of sleep we need is different from person to person,though the average seems to be just under 8 hours.