For nearly every sport you have to run even a little bit. Is it only in the beginning of a workout or in addition to the vaulting on the horse. Either way it improves your stamina.
So, there is again a new app which tracks your running & for every kilometer it donates for a project you choose. Sounds good? Than all you iPhone users, get the application, go running, get fit & just like that, donate. Unfortunately the Android users have to wait a little bit till MovingTwice is available for them, too.