If you’re just starting out, go with the beginner circuit. If you’ve been working out for awhile but wouldn’t quite consider yourself advanced, go with the intermediate circuit.

Plus, did you know you can mix up your circuits depending on your goals? Whether you're trying to lose body fat or build muscle, there's a smart way to train. Scroll on to find out exactly how.

This series of circuits can be done in its entirety, or you can pick a section you prefer to do, depending on your abilities and equipment.

Thought you needed weights and fancy machines to build 3D pecs? You don’t. In a recent YouTube video, top Strength Coach and ...