Have you tried to lose weight but failed? Or maybe you lost some weight, only to gain it back later and put on even more? Turns out it wasn’t your fault. Two 2023 scientific studies (the largest of their kind) found that all overweight men and women had one factor in common: insufficient sleep. And thin people had one more thing in common: restful, deep sleep. Lack of sleep doesn’t just make you look or feel bad. Scientific studies from Harvard and Yale universities show that it’s more harmful than smoking in the long run. Even if you think you sleep well, your body may not be getting the deep, restorative sleep it needs to maintain a healthy weight and a toned physique. With optimal sleep, you can easily and effortlessly burn fat. However, when sleep is disturbed, metabolism slows, cravings become frequent, and the aging process speeds up.