Do we have to be relativists on this question, too?

The last post evokes this question: if you could only pick one, which would be a superior way to maintain fitness -- something using natural movements and whole body exercises/strength training, or a system of exercises/stretches/breathing (like you find in Asia, whether it be yoga, qigung or something else). The two aren't mutually opposed, and some may have an exercise regimen composed of both, but could you determine that one is better if you were limited in your choice?