TETSUBand Alternating V-Up vs Frog Crunch
The Band Alternating V-Up and the Frog Crunch both train the abs as their primary muscle. The Band Alternating V-Up uses a band while the Frog Crunch is bodyweight-only. Here is how they compare and when to pick each.
Side-by-side comparison
| Band Alternating V-Up | Frog Crunch | |
|---|---|---|
| Primary muscle | abs | abs |
| Body part | waist | waist |
| Supporting muscles | hip flexors | hip flexors |
| Equipment | band | bodyweight |
| Steps in our guide | 5 | 5 |
How each one starts
Band Alternating V-Up — first steps
- Lie flat on your back with your legs straight and your arms extended overhead, holding the band.
- Engage your abs and lift your legs and upper body off the ground simultaneously, reaching your hands towards your toes.
Frog Crunch — first steps
- Lie flat on your back with your knees bent and feet flat on the ground.
- Place your hands behind your head with your elbows pointing outwards.
Full step-by-step guides are linked below.
Which should you choose?
The Band Alternating V-Up gives accommodating resistance that peaks at the top of the range. The Frog Crunch needs no equipment and scales through leverage, tempo and reps. If your gym has both options, neither is a wrong choice: pick the one that feels strongest through a full range, and swap after 6 to 8 weeks to keep the abs adapting.
Full form guides
Common questions
Is the Band Alternating V-Up better than the Frog Crunch?
Neither is universally better — both train the abs as the primary mover. The Band Alternating V-Up gives accommodating resistance that peaks at the top of the range, while the Frog Crunch needs no equipment and scales through leverage, tempo and reps. Choose based on your equipment and which movement you can progress consistently.
Can I do both the Band Alternating V-Up and the Frog Crunch in the same program?
Yes, but usually not in the same session — they overlap heavily on the abs. A common setup is one as your main movement and the other on a second training day, or alternating them block by block.
Do the Band Alternating V-Up and the Frog Crunch work the same muscles?
Yes — the primary muscle is the same (abs) and both rely on the same supporting muscles: hip flexors.
Track it in Tetsu
Tetsu tracks both movements separately, keeps your PRs per exercise, and tells you which one is actually progressing. Free to start.