Very nice. Simple, straightforward, to the point. If you included large icons for each of the exercises ( similar to http://thenounproject.com/noun/exercise/#

Very nice. Simple, straightforward, to the point. If you included large icons for each of the exercises ( similar to http://thenounproject.com/noun/exercise/#icon-No318 http://thenounproject.com/noun/exercise/#icon-No318 ) and used large type relative to the screen size ( so that someone doing the workout didn't have be too close to the phone or tablet they are running the timer on ) you would have something even more compelling.