The stability ball does not really improve ab work to any significant degree. In fact, the angle of pull would negate any added ROM. Always do crunches on the floor.
KaseyAkira 4 years ago
The stability ball does not really improve ab work to any significant degree. In fact, the angle of pull would negate any added ROM. Always do crunches on the floor.
KaseyAkira 4 years ago