From the article at SLUMBER YARD

The simple answer to this question is: it’s not simple. The relationship between sleep and weight loss is, in fact, wrapped up in both our mental and physical health processes. It’s true that you do burn off a small number of calories as you sleep, due to something called your basal metabolic rate — which is the number of calories it takes for basic human processes like breathing and blood circulation. But that doesn’t burn enough fat to allow you to lose weight.

It’s also not accurate to say that getting a good night’s sleep boosts your metabolism higher, helping you to lose more calories. That’s a common myth, but it’s not true. 

But what IS true, paradoxically, is that getting inadequate amounts of sleep can lead to an increased risk for obesity in many age groups. A 2020 meta-analysis published in the journal Obesity Research & Clinical Practice clearly indicated that short sleep duration was “significantly associated with the risk of future obesity”

Read more