Nope. When Regeneration is active, each Combat Turn you roll Magic+Body, and then add Body to the hits, and heal that many points of damage, starting with Overflow, then Physical, then Stun. So with, say, Magic 6 and Body 3 you would need to constantly have at least 7 boxes filled split between your Physical and Stun tracks to make sure (on average) that Regeneration doesn't heal all your wounds and stop working. You would have to do that constantly, day and night, 24/7/365, to keep Regen up. And even then if you roll high on your Magic+Body, you might end it, so to be safe you'd probably want something closer to 11 boxes...