After 5 weeks of exercise you are able to make the plank for 4 minutes.
Four days of practice - three days' rest. 5 weeks of intensive training of the core body that gives a nice sixpack.
Challenge your friends on Twitter or Facebook.
Page with push ups - where you can make from 1 - 100 push ups - animation and sound as you make push ups.
New push up page
B for bear - a children's book 