Does lack of sleep affect your ability to lose weight? It appears that the answer is yes, it does.
I found one study on PubMed that shows that sleep deprivation does reduce your ability to lose weight, even when you are on a diet. The results say that lost sleep “decreased the proportion of weight lost as fat by 55%” and “increased the loss of fat-free body mass by 60%”. So not only does sleep deprivation reduce your ability to lose fat, you end up losing good mass.
There was an additional study on PubMed that showed that people who sleep 6 hours or less each night have a higher chance of gaining fat mass than people who sleep 7 to 8 hours at night. It looks like your waistline will thank you for getting a full night’s sleep at night.
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