We all need a good night’s sleep - but how much is too much?

Eight hours of sleep is good. Any more than that, not so good. 

Researchers from the University of California discovered that those who regularly sleep 9 to 10 hours a night often have issues, including trouble falling asleep, difficulty waking up, daytime fatigue and even depression. 

Sleeping less than 7 hours a night puts us at risk as well. Several studies have linked shorter sleep to shorter life spans. Most experts agree, the sweet spot for sleep is between 7 and 8 hours a night.