A stability ball is another term for an exercise ball whose diameter can range from 30 to 85 centimeters, is made of soft elastic that can be filled with air to a desired firmness. .

Muscles engaged: obliques and quadriceps
Quadriceps: Quadriceps (quads) are a group of four muscles on the front of the leg that provide stability when standing.
Obliques: Obliques surround the ab muscles and act as stabilizers. Oblique muscles are worked in nearly every physical exercise and it is important to include oblique exercise in your workout routine.

To complete workout…

Step One: Place stability ball between both ankles and get in a side plank position keeping you elbow in line with your shoulder.

Step Two: Lower your side to the floor until your hip nearly touches the ground, keeping your abdomen and gluten squeezed while doing so.

Step Three: Return to starting position and fully contract obliques.