Yes, you read that right. Super short workouts can bring lasting results. But to burn fat in just four minutes, you’re going to have to work harder than you thought possible. For a Tabata-style workout, begin with a 5-minute warm-up, then push yourself to the max. Run in place, jump rope, or do squats for 20 seconds. Rest for 10 seconds. Repeat for 4-8 cycles.