DO CARDIO BEFORE BREAKFAST
Semi-intense cardio on an empty stomach is the most efficient way to lose fat, says Mathews, because the body doesn’t have any ready glycogen to burn, so it uses stored fat to get through the workout. However, if you push yourself too hard, you’ll start cannibalising muscle. Keep the cardio easy enough (heart rate under 140) by alternating walking and running or by walking at a steep incline (both can be done on the treadmill). “You don’t want to be huffing and puffing,” says Mathews.