StacyThis week, we feature veteran fitness instructor and trainer Stacy Rosen. She’s been working at Michael’s Body Scenes for 15 years and has the reputation of being tough but fair. “I only expect from my students what I would expect from myself,” says the native of Bethesda, Md. “and that’s giving 100 percent during class so you can achieve your goals.” Stacy teaches body sculpting, trampoline and trains individual clients. Her classes are always challenging but fun—that’s why they are packed!  Invariably, she’ll ask her students to evoke the chant, “Last set, best set!” Stacy pushes hard but she offers encouragement and modification so that all levels benefit. She holds a degree from AFAA in group fitness and NASM in personal training and an attitude that’s always positive. You’ll never get bored in Stacy’s classes because they are so diverse. “If you want to see changes in your body, you have to introduce change,” is her philosophy.