This is the brainchild of Heather Hughes, a physiologist, personal trainer and fitness instructor. After years of searching for the ultimate body-shaping regimen, Hughes developed Power Sculpt Fitness around the TRX suspension training system. A perk for busy moms: on-site childcare and 30-minute express workouts like the one I tried. I felt sore and conditioned-and still had time to grab lunch before preschool pickup. Win!