Q: How can people get fit on a budget?
A: You certainly don't have to be a member of the gym. There's so much that you can do in your living room. Start with your body weight: squats, push-ups, planks, step-ups. These are key because they're effective. You don't need to invest a lot. You really just need a couple key things: a stretchy band with handles, dumbbells and ideally a stability ball because you can use that as a bench and do chest presses or crunches on there. It's maybe a $60 investment in yourself and your fitness.

Q: You helped Jennifer Garner get her pre-baby body back. What recommendations do you have for new moms who want to slim down?
A: Moms tend to get a bit overwhelmed and sleep deprived, so when that happens you want sugar because you're trying to bring your energy back up. When people don't eat right it's usually because they don't have a good strategy in place or they didn't plan ahead. When you're cleaning up from dinner, make your lunch and put some snacks in baggies, so in the morning you have them ready to go.

New moms want to spend all their time with their babies. If they can spend 30 minutes in their exercise program taking care of themselves, it not only helps with their strength, but their stress as well. If you have that half an hour to let things go, I believe you wind up being a better parent. You feel better after a workout, so make that effort to put yourself first.

Q: What are common misconceptions about how celebs get in shape?
A: You can't just drink hot water and lemon for two weeks and be skinny. You can't live like that. Jennifer Garner does not walk around like Elektra all the time—that was our ultimate body, but that's so restrictive of calories. She may stay within five pounds of that and feel great and look sexy and hot. I want to teach people how to eat and exercise so that they can do it for the rest of their lives.