The Numbers Game
Jul 07, 2021
4 minutes
By Christina Quaine
7 hours of sleep per night
Keeping up with sleep science is exhausting. You know you need it: research shows that the benefits of solid shuteye range from boosting mood to regulating appetite-controlling hormones. As for how much you need, a 2019 US study suggested that sleeping for less than six hours can heighten your risk of chronic disease and shorten your lifespan plus, past research has pointed to a link between failing to clock up six hours with quadrupling your risk of catching a cold. But before you bed in for a 10-hour sesh, hear this: results from an international sleep
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