What do ball crunches work?

Because of its ability to target the entire core, the Swiss-ball crunch should be a staple in your workout. The exercise primarily works the rectus abdominis, or six-pack muscles, and the transverse abdominis . But when performed properly, it also calls on muscles that stabilize the hips and lower back.28 Haz 2005

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What are those balls at the gym?

It can also be used for weight training. The ball is also known by various other names, for instance: balance ball, birth ball, body ball, fitness ball, gym ball, gymnastic ball, physio ball, pilates ball, Pezzi ball, stability ball, Swedish ball, Swiss ball, therapy ball, or yoga ball.

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