Should You Do Cardio Before Weights Or After?

By Russ Howe


Should you do cardio before or after weights in the gym? If you are learning how to build muscle this is undoubtedly a topic which will pop up at some stage. Today we'll answer this question for you.

Thanks to the ongoing scientific research being performed in the health and fitness industry, many of the old myths and theories which were used for years have now been either confirmed as fact or condemned to ancient myth. This area is the latest to go under the microscope.

Over the last five years or so, there have been a number of tests on subjects to figure out the definitive answer to this popular fitness myth.

The answer may surprise you. Despite popular opinion, you should be performing your cardiovascular work before you begin weight training. Most instructors and fitness enthusiasts recommend doing it the other way around, the theory behind that approach being that if you hit the weights after a cardiovascular session your muscles will already be significantly worn out.

These recent findings lay to waste one of the oldest theories in fitness. It dates back so long that many people believe it to be fact and still insist on doing it to this very day. However, scientific studies prove that those who put their aerobic activity earlier in their workout enjoyed better fat loss and muscle growth.

Even subjects who were performing HIIT got the same overall results.

This happens because of the release of two enzymes in the body during physical exercise. They are known as AMPK and mTOR. AMPK is the body's call to action to help you adjust to aerobic activity.

The second enzyme, mTOR, is the key which turns on the muscle building process after a resistance training session. The bad news is that AMPK kills off mTOR, meaning if you stay in the gym after a training session and perform prolonged cardiovascular exercise you are significantly blunting your own muscle building process. Granted you can still achieve results, but they would be significantly superior if you did things the opposite way around.

Once the body releases mTOR you enter the golden window for post-workout nutrition. This peaks at one hour in length, although mTOR levels stay increased for up to 6 hours in total. To get the most from this period, simply avoid releasing any AMPK during this time.

This information comes in very handy for those who like to separate their workouts into two separate sessions per day. If you keep six hours between each workout you'll be able to get the full benefits of the muscle repairing process switched on by mTOR enzyme before you release any AMPK during cardiovascular activity.

If you were wondering how to build muscle by optimizing your resistance/cardio split you now have the latest scientific findings to help you do that. Whether you currently do cardio before or after weights doesn't really matter, it's what you do from this point on which counts towards your future results.




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