You should feel your heart rate rise quickly during this exercise. To maintain correct form, keep your chest lifted throughout the set, and step your entire foot onto the step. To make it easier, do the step-ups more slowly or do toe taps instead.
You should feel your heart rate rise quickly during this exercise. Focus on using the wrists to swing the jump rope. Because jump-roping is an agility drill, stay on the balls of your feet through each set to jump as quickly as possible.