I meditate twice a day. I meditate two hours every day. I spend at least an hour working out. So that's three hours every day of something mind/body discipline. Other than that: nothing.
The inner experience of meditation can be had without any kind of forced discipline. The outer trappings - how one sits, breathes, dresses, and so forth - are irrelevant.
Yoga began as a philosophy rather than as a physical discipline.
