GTA vs Wii Fitness PICK YOUR TEAM!

On Friday Wii Fit was released in the UK, My copy turned up today. On the plus side, I'm apparently ideal weight. On the downside, my wii fitness age is 49 :(
Tomorrow GTA IV is released, let the orgies of violence and crime begin!
so...
Get fit and healthy, or shoot people and run people over. Which will you be doing? (I played GTA 1 and 2 but went off it then, I'm a wii fit kind of guy).