Here's the Most Effective Cardio Workout You Can Do in 15 Minutes

At best you’re forced to trudge along some winding route only to end up where you started.

At worst, a machine makes you manically swing your limbs in vague arc-like motions for thirty minutes.

According to bodybuilder, researcher, and trainer extraordinaire,Dr.

With this in mind, Dr. Norton came up with the following workout:

1.

After 5 minutes, pedal as fast as you’re free to for 10 seconds.

Continue this for 20 seconds.

Go back to an easy pace and resistance for 90 seconds.

Repeat steps 2 to 4 until you hit 15 minutes.

Best Damn Cardio Humanly Possible in 15 Minutes| Arnold Schwarzenegger

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