No one likes waiting around for a machine at the gym. Not only is it frustrating, but it also kills your momentum: It forces you to take long breaks, which kills your fat-loss effects, slows your cardio benefits, and cools down your body (which can cause injuries).

Rather than standing around for minutes just to do a certain exercise, use substitutes that target the same muscle groups, have similar intensity (if not more), and require minimal equipment. You’ll be able to get more work done at the gym, save time, keep your heart rate up, and get more results.