5 - 60-SECOND PLANKS
Here’s how to do them: http://exercise.about.com/od/abs/ss/abexercises_10.htm
The Plank is great for building strong abdominal muscles! If this is your first time, start off by holding your plank for 10 seconds. If you can continue holding your plank with good form, stay up the whole minute or as long as you can while maintaining good form.
Post once to accept and be sure to come back and brag once you’re finished! You do not need to do theses all at one time break them up through out the day.
Super Challenge: Five 30-second planks + 30-second mogul planks. Here’s how to do them. Hold a static plank for the first 30 seconds and then Bend your knees, keep your feet together and jump up slightly and about a foot (or more if you are feeling particularly motivated) to the right. Jump feet back to the middle and then to the left. Keep on jumping for 30 seconds. Check out this video for a visual of both a high impact and low impact version.