Placing a small ball between the knees or palms to tone inner thighs and chest muscles. Choosing the Right Equipment For the best experience, Colleen Craig's method suggests:

Typically, a 55cm ball is for heights 5'0"–5'5", 65cm for 5'6"–5'11", and 75cm for 6'0" and over. When sitting, your knees should be at a 90-degree angle .

Seated on the floor with the ball in front, roll the ball away to improve flexibility and spinal alignment.

Current for the book or compatible exercise balls? A video tutorial that matches your current fitness level?

🎯 Regular practice leads to long, lean muscles, improved posture, and a "sensation of pleasure and well-being" as tension is released from the spine.