Does Mastrbation Cause Weight Loss? While it may burn some calories, the number of calories burned during masturbation is relatively small and not enough to lead to noticeable weight loss. Masturbation can trigger the release of dopamine and endorphins, which are hormones associated with pleasure and relaxation. While these can improve mood and potentially reduce emotional eating, they do not directly impact fat burning or calorie expenditure in a meaningful way. Masturbation does not have a lasting effect on metabolism or fat-burning processes in the body. The increased heart rate during sexual activity is temporary, and metabolism returns to normal afterward.