The most efficient cardio exercise

According to Saju Mathew, M.D. of Piedmont Physicians Group, interval training is a top way to challenge your body and burn calories.

“When we show up at the gym, a lot of us go to one or two of the [cardio] machines and try to grind it out at a moderate pace for 30 to 45 minutes,” he says.

While any amount of exercise is beneficial, if you’re truly trying to become fit, you need to push yourself, he explains. Put another way: If you want six-pack abs, interval training is a must.

How to do cardio interval training

Dr. Mathew suggests the following interval training routine:

Instead of 30 minutes on one machine, choose three different machines, such as the stair stepper, rowing machine and treadmill. Spend 10 minutes on each machine and try to do two rounds. If this is too much, start with one round and work your way up as you build endurance.

You can also try these cardio interval training routines designed by a Piedmont exercise physiologist.

The benefits of interval training

Thanks to a process called excess post-exercise oxygen consumption (EPOC), interval training can help you burn more calories even after you’ve finished your workout.

“If you get on a treadmill and walk for one minute, then run for three minutes as fast as you can, you’re going to increase the consumption of oxygen to your red blood cells,” he says. “It’s like you prime the red blood cells to keep burning calories even after you’re done with the workout.”

If you’re crunched for time and want to get into the best shape of your life, interval training can help you reach your goals.

“Try to change it up,” Dr. Mathew says. “When your body gets used to working out the same way, you’re not really pushing yourself to that maximum limit.”

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