Quick Answer
Reverse Crunch is a beginner strength exercise that targets your abdominals and core. It uses only your bodyweight. Lie flat back, arms sides.
Video Tutorial
How to Perform the Reverse Crunch
- 1
Lie flat back, arms sides.
- 2
Lift legs, knees bent 90 deg (tabletop).
- 3
Engage lower abs.
- 4
Curl hips off floor, bring knees towards chest.
- 5
Squeeze abs.
- 6
Lower slowly.
- 7
Repeat.
Common Mistakes to Avoid
- !Rushing reps instead of controlling the lowering (eccentric) phase — aim for 2–3 seconds down.
- !Letting form break down as reps add up. Stop the set when technique slips, not when you physically can't do another rep.
- !Using momentum to swing through reps. Pause briefly in the contracted position to keep tension on the muscle.
Tips for Better Form
- ✓Breathe out during the effort (concentric) and breathe in on the return (eccentric).
- ✓Use a mirror or film yourself on your first session — your perceived form and actual form often differ.
- ✓Keep ribs down and lats engaged — this keeps tension on the core, not the hip flexors.
- ✓Don't worry about load — master the movement pattern with light weight or easier variations first.
Alternative Exercises
If the Reverse Crunch isn't right for your body, equipment, or goal, try these similar exercises that hit the same muscle groups:
Frequently Asked Questions
What muscles does the Reverse Crunch work?
The Reverse Crunch primarily works your abdominals and core. Secondary muscles include the obliques and hip flexors.
What equipment do I need for the Reverse Crunch?
The Reverse Crunch needs no equipment — just your bodyweight. You can perform it at home or at the gym as long as you have what's listed.
Is the Reverse Crunch suitable for beginners?
Yes. The Reverse Crunch is a beginner-level exercise. Start with lighter load or fewer reps and focus on form before adding intensity.
How many sets and reps of Reverse Crunch should I do?
For strength: 3–5 sets of 3–6 reps with longer rest (2–3 min). For hypertrophy (muscle growth): 3–4 sets of 8–12 reps with moderate rest (60–90 sec). For endurance: 2–3 sets of 15+ reps with short rest (30–45 sec). Adjust based on your program and goal.
Can I do the Reverse Crunch every day?
No. Muscles need 48 hours to recover between heavy training sessions. If you want to train abdominals and core more frequently, alternate harder and easier variations and keep overall weekly volume moderate.