Planks come in many forms and can be varied in many ways. Practitioners will choose the form of plank that best suits them. However, straight-arm plank is probably the most difficult and demanding exercise, according to the health website Verywell Health (USA).
Plank not only affects the abdominal muscles but also many other muscle groups in the body.
The straight arm plank starts you off in a push-up position. Your body is supported on your hands and toes, and your arms should be straight. Your legs should also be straight out behind you, with your feet hip-width apart.
When planking, the practitioner must push the back and hips to form a straight line, not curved. When starting to do straight-arm planks, people should try planking for 10 - 30 seconds and then gradually increase the practice time.
In addition to working your abs, planks work a variety of other muscle groups in your body. In fact, when done correctly, planks are a full-body workout that works almost every muscle group in your body from head to toe.
Starting from the top down, planks will activate many muscle groups in the upper half of the body. Specifically, planks help shape the muscles in the upper back, tone the chest muscles and strengthen the serratus anterior, the muscle group located near the intercostal muscles, adjacent to the chest and shoulder muscles. Not only that, planks also affect the deltoids, triceps and biceps.
Plank also helps stimulate the muscle groups in the lower half of the body more. Because plank will tighten the lower abdominal muscles. When tightening the lower abdomen, we also use more force in the hamstrings, calves and glutes.
All of this will strengthen your hips overall, which is especially beneficial for people who spend most of their day sitting. Plus, because you’re keeping your legs straight when you plank, it also works the muscles in your feet, toes, and ankles, according to Verywell Health .
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