I sleep less than 7 hours a night and didn't think it was an issue until a recent study said otherwise — an expert explains more

I function well on around six hours a night, but now I'm wondering if I should try to sleep more and, if so, how?
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Here's How Many Hours You're Meant To Sleep Per Night (By Age)

Drinking eight glasses of water a day, taking 10,000 steps daily, and snoozing for eight hours each night have been wellness mantras for years now ― except that they don’t really hold up. Experts say ...