Women's Running and Women Runners

These are the stability ball exercise images from left to right and here are the descriptions of the moves:

Squats With a Stability Ball
Rest a ball between your back and a wall; squat until your knees are bent 90 degrees.

Push-Ups With Ball
Rest your knees, shins, or toes on a ball.

Lunges

Do them either regular or rest your back leg on a ball and just bend and straighten front knee. Great for balance.

Plank
Elbows under shoulders, abs tight, rest on toes, hold as long as possible. (I topped out at two sets of 1:45 holds.) 

Sit-Ups on the Ball
The classic: feet flat on the floor, neck relaxed, abs the primary muscles working.

Back Extensions
Rest your torso on the ball and put toes on floor. Hands behind your neck, lean forward, then straighten your back.

Oblique Twists on Ball 
Lift up and twist your right shoulder toward your left knee, then lower; repeat on other side

Stability Ball Workouts