While there’s a wide range of gear on sale, some of the biggest mark-downs are on cardio equipment. That includes the Echelon Row S, which was ranked the best mid-range foldable rower by Men’s Health ...

Hanging leg or knee raises target the lower abs, while weighted crunches target the upper region. For obliques, Wai likes BOSU ball star crunches or standing weighted oblique crunches.