Actress Hilary Duff’s stay-fit secret? Piloxing (piloxing.com). Created by Viveca Jensen (she’s also Duff’s trainer), the high-intensity cardio workout mixes two- to four- minute blasts of boxing, Pilates and dance for a fat-scorching, muscle-sculpting good time that works you to the core, literally.
“The core is the key to Piloxing,” says Jensen. The Pilates portion sculpts glutes and thighs, while the punching portion builds arm strength (you’ll need it post-baby).
Modifications: Wear a sports bra and walk it out if it gets too bouncy on tender breasts.