No equipment necessary! If you want to kick your core workouts up a notch, adding in v-ups are the way to go. “They help strengthen your legs, abs, obliques, hip flexors, and lower back,” Amber Rees, senior trainer at Barry’s in New York City and cofounder of the Brave Body Project, tells Runner’s … Read … Continue reading V-Ups Build Core Strength and Stability—Here’s a 4-Move Workout to Try