Yoga ball, also known as fitness ball, physical therapy ball, Swiss ball, etc. It's a big vinyl ball. You can use it to strengthen and stretch your body and improve the stability and balance of the core.
Yoga ball should be listed as one of the necessary equipment in the gym. Everyone should try to use it. It has many functions, does not take up much space, and the price is very low.
In addition, using yoga balls to exercise can raise the traditional strength training to a new level. This can be used to improve the performance of many athletes.