Very nice. Simple, straightforward, to the point.<p>If you included large icons for each of the exercises
( similar to <a href="http://thenounproject.com/noun/exercise/#icon-No318" rel="nofollow">http://thenounproject.com/noun/exercise/#icon-No318</a> )
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.
The idea comes from this article from The New York Times <a href="http://well.blogs.nytimes.com/2013/05/09/the-scientific-7-minute-workout/" rel="nofollow">http://well.blogs.nytimes.com/2013/05/09/the-scientific-7-mi...</a>.