Sit-ups

Just got home from the gym. 100 sit-ups done, only 500 left for the week challenge . Nice!
How is it going for you?

Today I did my sit-ups with a exercise ball, its fun and easy.

Stability ball are more effective for the stomach muscles than lying on the floor. It also doesn't hurt your back and it also great for the balance!

 Here is a good video that shows how to do it proper http://www.videojug.com/film/how-to-do-crunches-with-an-exercise-ball

 Good luck skinny girls!

Ida