Interval training helps you to vary the monotony of jogging or a weight-lifting routine by having intense periods of activity and alternating with less intense periods. You can also alternate cardiovascular activity with weight training to make your exercises interesting. This can also help you burn more calories. Image titled Use an Elliptical Machine Step 5 3 Take advantage of the varied equipment. Using new or varied equipment allows you to work different muscle groups. It also forces you to learn new skills and vary your routine, keeping your exercises diverse and interesting.