4 ways to lose weight while you sleep

There are some things out there almost too good to be true, including the fact that you can lose weight while you sleep. It's no secret that sleep deprivation can make you fat -- anything less than 8 hours of sleep lowers metabolism, unless you hit the gym at night, which will raise your metabolism for hours. Taking a cold shower before bed can help you lose weight, too -- you'll drop nearly 400 calories! And, if you sleep in a room that is 65 degrees or less, your body will burn fat to regulate its temperature.

Watch the video above for more lazy weight loss hacks!

Check out the slideshow below for additional sleeping tips:

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