Firm your abs, legs, butt and more with these pumped-up planks.
What: Plank. But better than plain plank. Trainer David Kirsch adds moves so you bonus-tone other body parts for an allover workout. Efficiency, up; boredom, down.
You’ll Need: A set of 5-pound weights
How: Do 3 sets of 12 reps of each multitasking move three times a week on alternate days.
Reach for It
Start in a side plank, left...