Crunches
Stronger abs. Better posture. Stronger you.
A classic exercise that strengthens your core, tones your midsection, and supports a strong, healthy back. Great for building core strength, improving posture, and supporting everyday movement.
Benefits
- Strengthens abdominals and core muscles
- Improves core stability and balance
- Supports better posture and spinal alignment
- Helps prevent lower back pain
- Enhances athletic performance
- Great for all fitness levels
Muscles worked
Rectus Abdominis (upper & lower abs) Obliques Transverse Abdominis Hip Flexors Lower Back
Step by step
1
Start
Lie on your back with your knees bent and feet flat on the floor. Hands behind your head or across your chest. Engage your core.
2
Crunch up
Exhale and lift your shoulders off the floor by engaging your abs. Keep your lower back on the floor.
3
Top position
Squeeze your abs at the top. Your shoulder blades should be off the floor. Hold for a moment.
4
Lower down
Inhale and slowly lower your shoulders back down with control. Repeat for the desired number of reps.
Tips for best form
Do it right.
- Keep your chin up and neck relaxed
- Don't use momentum
- Exhale as you crunch up, inhale as you lower down
- Keep your lower back pressed to the floor
- Stop at the top — don't sit all the way up
Common mistakes to avoid
- Pulling on your neck
- Using momentum
- Raising up too high
- Arching your lower back
When to do it
- After warm-ups
- During core or strength workouts
- During or after cardio sessions
- In the morning to activate your core
- Before bed for light core work
- As part of your daily routine
Add to your routine
- After full-body or upper body workouts
- During core or ab days
- At home, at the gym, or while traveling
- Combine with a healthy diet for best results
- Be consistent and patient — results take time
How much, how often
| Level | Reps | Sets | Frequency |
|---|---|---|---|
| Beginner | 10–15 | 1–2 | 3–4x per week |
| Intermediate | 15–20 | 2–3 | 3–4x per week |
| Advanced | 20–30 | 3–4 | 4–5x per week |
| Athlete | 30+ | 3–4 | 4–6x per week |
Progressive overload + consistency = a stronger core.
Tips for best results
- Focus on quality, not quantity
- Engage your core throughout
- Use a controlled movement
- Don't pull on your neck
- Breathe out as you crunch up
- Consistency and progression build results