Summer is right around the corner, and if you're looking for a challenge—and a six-pack—Jeff Cavaliere, C.S.C.S., of Athlean-X has you covered with an ab workout that’s built for all fitness levels.

How to do it: Attach a rope to a high cable pulley and grab with both hands. Pull the rope toward your face while flaring your elbows out, squeezing your upper back and shoulders at the end. Related: ...

"The abs flex the spine in two main ways—from the top-down with your rib cage being pulled toward your pelvis, and from the bottom-up with your pelvis being pulled up towards your rib cage," Cavaliere ...