Sleep regulates hormones such as ghrelin and leptin that control appetite. Good quality and quantity of sleep allow your muscles to recover. When you’re well-rested, you’re more likely to engage in physical activity and make healthier food choices. A fast metabolism means better weight loss as it helps you burn more calories. Elevated cortisol levels can not only make you consume some extra calories but also promote fat storage, particularly around the abdomen.Track Latest News Live on NDTV.com and get news updates from India and around the world. Follow us on Facebook, Twitter and Instagram for all the latest news on the latest travel and news stories from around the globe. For confidential support on suicide matters call the Samaritans on 08457 90 90 90, visit a local Samaritans branch or see www.samaritans.org for details. In the U.S. call the National Suicide Prevention Line on 1-800-273-8255 or visit www.suicidepreventionlifeline.org.