Friday, July 26, 2013

Is Doing Cardio After Weights Superior To Doing It Beforehand?

By Russ Howe


At some stage, everyone who wants to know how to lose weight finds themselves in a situation in the gym where they are getting conflicting advice from everyone they talk to. One of those situations involves this question - should you do cardio before or after weights?

Today you are going to find out the factual answer to this question.

Let us begin by looking at the most common myth associated with this question. Many people believe that by doing cardiovascular exercise before resistance training you will leave your muscles zapped of strength and restrict your ability on the weights, therefore it would make natural sense to go with hitting the weights first and doing your cardiovascular activity at the end.

Pre workout aerobic activity certainly sounds better when you consider hitting the gym with your legs already zapped from cardio, of course, but the latest scientific research on the subject puts a whole different spin on this topic.

You see, in order to get to the bottom of this popular gym myth we have no choice but to look at things on a scientific level. The body makes several noteworthy changes during your time on the gym floor, some of which are hugely important in answering this question. The first of which is m-TOR release.

This is the enzyme responsible for signalling the start of the muscle building process after a heavy weights session. It is not uncommon to see this name on the front of various protein supplements, which all claim to cause an increase in m-TOR release to help you build more lean muscle after a hard workout. The body increases m-TOR for up to six hours after a resistance workout, making it easier for you to build lean muscle temporarily.

During aerobic activity, such as a bike or treadmill, the body adapts by releasing an enzyme called AMPK.

Ready for the controversial bit? AMPK release kills m-TOR dead in it's tracks!

So jumping on a bike for 30 minutes of cardiovascular exercise after a workout might sound good in theory, but in truth you are doing more harm than good to your chances of building rock hard lean muscle any time soon. The increase in your AMPK levels will do significant damage to the increased m-TOR you created by hitting the weights, rendering your session only half as great as it could have been.

Further studies have since gone on to reveal that pre workout cardiovascular activity does not zap your muscles of strength either. It impacts only the muscles which are involved during the cardio itself, so for example a bike would impact your legs. To get full benefit from increased m-TOR, common sense would decree that you should be avoiding post workout cardio and to avoid ruining your ability with weights on leg days simply drop cardio from your routine here.

If you are searching for the best explanations on how to lose weight then it makes sense to go with the most logical scientific answers rather than buying into the wealth of gym myths which are out there. Should you do cardio before or after weights? The latest science is massively in favor of doing it before.




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