Like its cousin the pushup, pull-ups are surprisingly simple and rewarding. To get started, you can install a pull-up bar in a closet doorway. Bars are also usually available at local playgrounds.
This month, challenge yourself to find a pull-up bar (or install one) and add pull-ups to your fitness routine. Even doing half a pull up a couple days per week will eventually add up to real strength.

This challenge has been provided and reproduced with permission from Kashi.com.  Please feel free to post comments on their site.