Pilates is for platies, I suppose.
Yoga for Yoyo loaches.
Taebo for tiger barbs.
But for your betta, a big ol' diet!! Get a separator for the tank, and corral him in his favorite spot for feedings. When you feed the fish, feed the others first, and then add a flake or two for him.
Actually, if he's gonna be hungry, keep the divider in there for a while. Can you get a divider at your LFS
? Have you ever used one before? What size tank is he in? A 10 or 20 Gallon, right?