According to most health experts, including **WebMD**, **Healthline**, and **Sleep Foundation**, most healthy adults need between **7 to 9 hours of sleep per night** to function at their best. Babies, young children, and teens need even more sleep to enable their growth and development.
However, sleep requirements vary slightly from person to person and are affected by several factors such as age, lifestyle, health status, and genetics . For example, older adults (ages 65 and older) need 7-8 hours of sleep each day.
It is important to note that the amount of sleep required decreases with age. Although there are individual differences, it is recommended that those in their 20s sleep about 7 hours, while those in their 60s and older should sleep about 6 hours according to Dr. Hiroyuki Ueda.
