6 Ways to Increase Your Metabolism


Studies such as those conducted by Laval University, East Tennessee State University, Baylor College of Medicine, and the University of New South Wales have shown that shorter, high-intensity cardio sessions result in greater fat loss over time than low-intensity sessions. Research has also shown that high-intensity training is more muscle-sparing than low-intensity cardio.

Therefore, I recommend doing HIIT for all cardio, and keeping your sessions 20-30 minutes long. Here’s how it works:

  • You start your workout with 2-3 minutes of low-intensity warmup.
  • You then go all-out, as fast as possible, for 30-60 seconds (if you’re new to HIIT, 30-second intervals will be plenty, but you want to try to work toward being able to do 60-second intervals).
  • You then slow it down to a low-intensity recovery period for the same period as your high-intensity interval. Again, if you’re new to HIIT, you may need to extend this rest period to 1.5-2 times as long as your high-intensity interval. If you’re still out of breath and your heart is racing, you’re not ready to hit the high-intensity again.
  • You repeat this cycle of all-out and recovery intervals for 20-30 minutes.
  • You do a 2-3 minute cool-down at a low intensity.

You can apply the HIIT style to any type of cardio that you would normally do. You can head outside and walk and sprint, or you can hop on the elliptical trainer or recumbent bike to get it done.

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