The lowdown: “Inhale, exhale and don’t forget to breathe,” Exhale Mind Body Manager Kimberly Welby says while conducting an intense Core Fusion Sport class. Welby, as it turns out, has enough pep to ...

Melissa Meris lifts weights while perching on her foot in a dancer’s pose, then maneuvers a ball with her feet before holding a knees-bent pose at the ballet barre. "Every single muscle in my body is ...