SleepTier 2 source

Too much or too little sleep may make your body age faster

ScienceDaily Aging

From the abstract

Both too little and too much sleep may be linked to faster aging throughout the body. Researchers analyzing 23 biological aging clocks found the lowest aging levels among people sleeping about 6.4 to 7.8 hours per day. Short or long sleep was also associated with numerous conditions affecting the brain, heart, lungs, metabolism, and digestive system.

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Too much or too little sleep may make your body age faster | past100