As per the World Health Organisation ( WHO ) standards, they prescribe that: 3 to 12-month-old infants need 4 to 15 hours of sleep; 1 to 3-year-old children need 12 – 14 hours of sleep; 3 to 5-years-old need 11 – 13 hours of sleep; 6 – 12-years-old need 10 – 11 hours of sleep; 12-18-years-old would need around 8 to 10 hours sleep, and those above 18-years require 6-8 hours of sleep. Here are some tips to help you sleep well: