Why do men burn more calories than women, even when they’re doing the same amount of work? It’s because men have more lean muscle mass. Each pound of muscle that you have burns about 35 calories every day, while each pound of fat you’re storing only burns about two calories a day. That’s a really big difference! If you’re interested in burning more calories, you have to incorporate weight-lifting into your weekly exercise routine. Not only will you burn a bunch more calories during a combo workout, but lifting weights regularly will also help to build the lean muscle mass you need to turn your body into an efficient calorie-burning machine. Spending just 2-3 days every week in the gym pumping iron and 3-5 days doing cardio is a good start to losing fat and gaining muscle.