How sleep affects fat loss

Sleep can have numerous impacts on your fitness goals: loss of strength, higher stress, chronic inflammation…

There are studies where subjects were placed on a weight loss diet and divided into two sleeping interventions, 8.5h per night & 5.5h per night, with similar calories and macronutrient distribution for both groups.

Both groups lost a significant amount of weight, however, the 5.5h group lost significantly less fat and more muscles, and if you’re looking to improve body composition, this is the opposite you want from a diet.

While losing sleep may not affect the total amount of weight you lose, it can cause you to lose significantly more muscle mass during your diet as opposed to losing more fat mass.

This is one of the main causes of a slowing down effect on your metabolism.