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.

You only have so much time in the gym to dedicate towards growing your chest. If you want to maximize chest gains, it helps to know which exercises make the cut and which are better skipped. Jeff ...