Should You Do Cardio Before or After Weight Training?

I get asked this question a lot. "Should you do your cardio before or after your weight training?"




Well, it depends on your goal(s).

If your goal is to build muscle, it can best be accomplished by lifting weights first when the body’s main source of energy for muscle contraction (glycogen) is high. If you do a hard cardio workout before lifting, you deplete glycogen, which makes the workout ineffective.



If your goal is to build your cardiovascular endurance,

you should perform endurance exercise first, when you have plenty of energy for long-distance exercise. Add resistance exercises 2 to 3 times a week, either after or separate from the endurance work in order to develop muscular strength and reduce your risk of injury. Lifting prior to running is not recommended because you increase your risk of injury due to muscle fatigue.



If you are just trying to get healthier, it really doesn’t matter if you lift weights first or do endurance training first. In fact, you can do both at the same time with interval training (see yesterday’s post) or circuit training routines or you can alternate weight lifting and endurance days if you prefer.



If you are trying to lose fat and burn calories, you should probably do cardio first and lift weights next. The reason is that it is usally easier for most people to burn more calories per exercise session when they do cardio first. However, almost any combination of burning more calories while eating fewer will result in fat loss.



Some people can lose significant weight just though dietary changes; others do it just by lifting. Weight lifting definitely burns calories; in fact, it often burns more calories per minute than performing endurance exercise. The problem is that most people fatigue quickly when lifting weights, and therefore cannot perform the exercise as long as they can walk, bike or use an elliptical machine. The end result is that the total calories burned per exercise session tends to be higher for those who do endurance exercise first, simply because the can exercise longer.



I personally mix up the cardio depending on what body part I’m working and how much time I have. If I need to do serious cardio I try to make a stand-alone activity so that I can focus on it 100%. The same with lifting. But sometimes my time is at a premium and I have to mix, match and combine my cardio and lifting sessions.



So, when do you do your cardio? (Don’t say you don’t do it at all — that’s not allowed!).