part 1:
Define Circadian Rhythms. Discuss the mechanisms of the body’s “biological clock and explain why seasonal affective disorder is an example of a long-term biological rhythm.

part 2:
Most people who are returning to work after a long weekend would say “no!” However, there are some researchers who argue that some people get too much sleep. A study in the journal Sleep has found after surveying more than 104,000 people in Japan aged 40–79, for nearly 10 years that those who reported sleeping eight or more hours a night were at greater risk of death than those who slept seven hours.

Please research these question and include your researched findings within your discussion demonstrating the importance and purpose of sleeping and the effect it can have on our bodies with or without it.