Resistance plank Add a resistance band to work your core, shoulders, AND hamstrings. Place band around wrists and ankles; form a straight-arm plank. Move left hand and right foot out 6 inches. repeat on opposite sides. That's 1 rep. Do
QUICK AT HOME WORKOUT: Try these living-room friendly exercises next time you binge watch your favorite show. Do 10 to 15 reps of each move on each side, then repeat the entire sequence at least twice.