07/23/2014 08:27 am ET Updated Jul 23, 2014

Why Does Sleeping In Just Make You More Tired?

Christa Renee via Getty Images

We've all been there: It's been a long week at work, so Friday night, you reward yourself by going to bed early and sleeping in. But when you wake up the next morning (or afternoon), light scathes your eyes, and your limbs feel like they're filled with sand. Your brain is still lying down and you even have faint headache. If too little sleep is a problem, then why is extra sleep a terrible solution?

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