Nothing is supposed to happen. As noted in the roadmap, that feature is incomplete. Please see the development thread.

You might try qexercise if you want something more functional. I don't have much time to program, so development of this app is very slow.

As I've stated before, once I think this is usable, I'll promote it to testing.

For future reference, anyone that has questions or concerns about maegym should either pm me, or post in the above thread, thanks. :-)