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1. Deltoids. Deltoids are a fancy term for "shoulder muscles." "The deltoids are located at the top of the arm and cover the shoulder joint," Julom explains. "When doing jumping jacks, the arms ...
Schoolchildren in the US performing jumping jacks. A jumping jack, also known as a star jump and called a side-straddle hop in the US military, is a physical jumping exercise performed by jumping to a position with the legs spread wide and the hands going overhead, sometimes in a clap, and then returning to a position with the feet together and the arms at the sides.
Plyometrics, also known as jump training or plyos, are exercises in which muscles exert maximum force in short intervals of time, with the goal of increasing power (speed-strength). This training focuses on learning to move from a muscle extension to a contraction in a rapid or "explosive" manner, such as in specialized repeated jumping. [ 1 ]
Push-up. Animation of a full push-up (the wide positioning of the hands increases the push-up's use of chest muscles as opposed to arm muscles) Side view of a push-up. Push-up technique. The push-up (press-up in British English) is a common calisthenics exercise beginning from the prone position. By raising and lowering the body using the arms ...
How to: Step onto the trampoline and begin jumping up and away. Relax your body and keep movements free-form. Allow yourself to catch some air, with no tension in your upper body and a softness in ...
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A back extension is an exercise that works the lower back as well as the mid and upper back, specifically the erector spinae muscles. There are two erector spinae, one on either side of the spine, that run along its length. These are formed of three smaller muscles – spinalis, longissimus, and iliocostalis. [1]
Leg raise. The leg raise is a strength training exercise which targets the iliopsoas (the anterior hip flexors). Because the abdominal muscles are used isometrically to stabilize the body during the motion, leg raises are also often used to strengthen the rectus abdominis muscle and the internal and external oblique muscles.