I guess you can say that every actor is a 'character actor' on some level. But I think some actors have a wider range. I think that's how you get that mantle.
Yes, exercise is the catalyst. That's what makes everything happen: your digestion, your elimination, your sex life, your skin, hair, everything about you depends on circulation. And how do you increase circulation?
Faith and prayer are the vitamins of the soul; man cannot live in health without them.

