I got an iPod touch for Christmas, and I was looking around the app store at all the health and fitness apps available. Do any of them work? Are any of them actually useful? Which ones would you recommend? I don't mind paying for something if its worth it and has a reccomendation. For example, I've been introduced to the 100 push up challenge website, and was looking for an app that would update as I'm progressing; something
So basically, I need help. Here's looking at you xkcd forumites.