One of your great qualities is the ability to be realistic. This is good news for setting up your health practice, as it's important to set attainable goals, otherwise you're likely to slip from pressure or lack of self-confidence. The exercise you choose needs to be something you like, and something that fits in with your daily schedule. For instance, if you choose rock climbing, you need a place where you can do that on a regular basis available (unless of course you live near a natural rock face!).