You can do a variety of workouts
If your weekly workouts are sprinkled with a variety of activities, your body is benefiting from the variety and challenge that comes with training different muscles. Strength training, yoga, running, kettle-bell workouts, TRX moves, the list goes on and on. If you can easily alternate between different types of exercises, you're probably in better shape than you think.
[Photo via @barre3westvillage]