The Fastest Ways to Melt Away Pounds

Never seem to be able to fit a solid workout? You can still see results even if you just have minutes to sweat — you just have to increase your intensity. A recent study found that just 20 minutes of exercise can cause changes to your muscle's DNA, including metabolism and afterburner effects, while other studies have shown improvements in multiple markers of health in as little as seven. The trick is to exercise at your max potential in 30-second bursts, followed by a recovery period. Sounds manageable, right? Get some workout ideas below.

• A seven-minute HIIT workout you do have time to do.
• These 2.5-minute workouts help you burn an extra 200 calories all day.