15-Minute Core Workout with a Dumbbell by Nicole Pearce
Queue up your workout playlist and tune in for this full core, one-dumbbell circuit with personal trainer Nicole Pearce, NASM. The weight adds serious intensity to moves like full-body crunches and side plank dips, so remember to modify if you feel your form being compromised; for the double leg lifts especially, make sure your lower back is pressed against the floor.