Machine Crunch
Machine crunches to safely load the abs. It works mainly the abs, with help from the obliques.
Flawless ranks it by sets logged: Gold, the third of eight ranks, starts at 50.
How to do Machine Crunch
- Set the seat so the pad sits against the upper chest and the feet are under the rollers, then hold the handles.
- Crunch forward by pulling the ribs towards the hips, rounding the upper back against the pad.
- Squeeze the abs at the bottom for a second; the hips stay still on the seat.
- Return slowly until the abs are stretched, without letting the weight stack rest.
These are the same steps you see in the exercise guide in the Flawless app.
Muscles worked
| Role | Muscle | Anatomical name |
|---|---|---|
| Primary | Abs | Rectus abdominis |
| Secondary | Obliques | Obliquus abdominis |
Muscle data from StrengthLog.
Why do it
- Upper abs through a short, controlled range
- Easy to add resistance over time
- Direct work on the visible part
How Flawless ranks Machine Crunch
| Rank | Sets logged |
|---|---|
| Bronze | start |
| Silver | 10 |
| Gold | 50 |
| Platinum | 150 |
| Diamond | 300 |
| Obsidian | 600 |
| Painite | 1,000 |
| Antimatter | 3,000 |
Flawless ranks Machine Crunch by sets logged: the number of sets you have logged over time. The ladder is the same for everyone, because it measures work done rather than strength relative to bodyweight. The rank updates after every workout.
Similar exercises
Questions
What muscles does Machine Crunch work?
It works mainly the abs, with help from the obliques.
How do you do Machine Crunch?
Set the seat so the pad sits against the upper chest and the feet are under the rollers, then hold the handles. Crunch forward by pulling the ribs towards the hips, rounding the upper back against the pad. Squeeze the abs at the bottom for a second; the hips stay still on the seat. Return slowly until the abs are stretched, without letting the weight stack rest.
How does Flawless rank Machine Crunch?
By sets logged: the number of sets you have logged over time. Gold starts at 50 and Diamond at 300, the same for everyone.
Try it free
Free on Google Play and the App Store. The whole log is free; PRO is optional.