What can I do to practice?
The most common complaint from participants after rappelling is that their forearm got sore during the descent. The new device used alleviates much of the difficulty experienced in the past. Proper techniques like switching arms and the new device make a lot of difference.
Go rock climbing at a local climbing gym! Not only does rock climbing strengthen your forearms, but also it allows you to hang in a harness. Although the harnesses we use are different. You will still get the idea of what muscles it takes to stay upright.
Get psyched! Tell your friends. You’re one of a few special people who will be doing a 17-story rappel!