The abs flex the spine, the obliques rotate and bend it, and all of them resist movement you do not want. This session has one exercise for each job instead of five versions of a crunch.
With a full gym you can open with a heavy barbell lift and finish on cables and machines, which let you push close to failure without technique being the thing that gives out.
Sets per muscle. A muscle that only assists in an exercise counts half.
How to run it
Before the first exercise, do two lighter sets of it: one at about half your working weight and one at three quarters. Rest for the time shown next to each exercise; the heavy lifts at the top need more than the smaller ones at the end.
Aim to finish each set with one or two reps left in you. If every set reaches its target easily, the session is too light. Add the smallest plate you can to the barbell lifts, and move up one pin on machines and cables once every set reaches the target.
Two or three times a week, at the end of another session or on its own. The abs recover quickly, but they are also worked in every squat, deadlift and overhead press.
In myreplog
Logging is free for good. The first 14 days also include Pro, where a coach reviews each session and suggests the weights for the next one. No card needed.
Questions
About 30 minutes. That is 18 working sets with the rests listed next to each exercise, plus five minutes to warm up.
Mostly the abs, obliques and shoulders. The lower back and forearms assist. The map on this page shades each muscle by the number of sets that reach it.
A full gym: barbells, dumbbells, cables and machines.
You can, but it does not help much. Like any other muscle they grow between sessions, and two or three hard sessions a week do more than seven easy ones.
No. Training a muscle does not remove the fat over it. Ab work builds the muscle; whether it shows depends on your overall body fat, which comes down to food.
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