right leg out in front of you, holding it parallel to the floor for five seconds, return and switch legs.
As the exercise becomes easier to do, increase the number of times you alternately straighten legs while holding the sit.
Jumping jacks, an old standby, are still effective and offer a cardio workout as well.
Here’s how to make them more fun and more challenging:
Start by standing with feet together, arms at your sides and then
