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Bad Sleep Makes You Fat, Kills Testosterone

01dragonslayer

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BAD SLEEP MAKES YOU FAT​

Have you noticed that when you get a crappy night of sleep you tend to eat more the next day? It's not in your mind. Bad sleep can be the catalyst for developing a bad body.

A new study (a meta-analysis) published in the European Journal of Clinical Nutrition found that when people don't get enough sleep, they eat around 385 more calories the following day. This is called "partial sleep deprivation." It means that you slept, but only about 4-5 total hours.






What Causes This?​

There are a couple of theories:
  • Partial sleep deprivation results in greater activation of areas in the brain associated with reward – fattening foods in this case.
  • Disruption of the internal body clock affecting your regulation of leptin (the satiety hormone) and ghrelin (the hunger hormone).
  • Lack of sleep gives you the munchies like weed. Erin Hanlon, PhD, notes: "Sleep restriction boosts a signal that may increase the hedonic aspect of food intake, the pleasure and satisfaction gained from eating. It seems to augment the endocannabinoid system, the same system targeted by the active ingredient of marijuana, to enhance the desire for food intake."
Interestingly, most of the subjects in the studies didn't go for carbs as you'd expect, but more dietary fats. They also consumed less protein when sleep deprived.

It Kills Your Testosterone Too​

Although the researchers in the above meta-analysis didn't mention it, other studies have concluded that when healthy young men sleep 5 hours or less per night for a week, their testosterone levels take a dive.


Generally that means less muscle, less energy and more body fat over time. Five hours of sleep per night decreased subjects' testosterone levels by 10 to 15 percent in one study, and these guys were in their early 20's.


A Supplement Fix​

If sleep evades you and the whole slowly-get-fat thing doesn't sound fun, then along with the usual "put down your damn devices and sleep in a cool room" advice, consider supplementing with ZMA®.
 

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