Sleep is crucial for weight loss, together with diet and exercise. You should try to fall asleep between 10pm and before midnight and sleep for 7-9 hours. If you stay up late, your body will start producing cortisol which slows down fat loss. So, if your weight is stalling, inadequate sleep patterns might be of part of the problem. The body also conducts repairs and self-healing at night in addition to detoxifying the cells, lack of sleep can make existing health conditions worse. Quality sleep is also crucial, this means winding down before bed and avoiding technology and bright screens for at least half an hour before trying to sleep.