Abdominal Oblique Crunch.

The sides of the abs count too.

Ab training usually ends in straight crunches and nothing more, and the obliques, the ones that actually do the job when you rotate or carry something heavy on one side, never get trained under load. Here you get both straight contraction and rotation in the same machine, with plates on the pegs, so you can write down a number after the session instead of counting reps until you get bored. You work against the padding with the upper body instead of pulling yourself forward with the neck. The machine measures 1420 × 1150 mm, is 1720 mm high and weighs 125 kg. Rotation is strength too.