Exercise guide
Lying Floor 6 Inch Hold
- Intermediate
- Isolation
- Timed hold
- Waist
This isometric core exercise builds significant tension in the lower abdominals and hip flexors by maintaining a static hold against gravity. It improves core stability and endurance while engaging the quadriceps to keep the legs fully extended.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Lie flat on your back on a mat with your legs fully extended and feet together.
- Place your hands flat by your sides or tucked slightly under your glutes for additional lower back support.
- Engage your core by pressing your lower back firmly into the floor, eliminating any arching in the spine.
How to do it
- Lift both legs simultaneously until your heels are approximately 6 inches (15 cm) off the ground.
- Hold this position statically while maintaining a steady, shallow breathing pattern (do not hold your breath).
- Keep your knees locked and legs perfectly straight throughout the duration of the hold.
- Lower your legs slowly and under control back to the floor once the set is complete.
Form checklist
- Keep your lower back pressed firmly into the floor at all times.
- Ensure your legs are straight with no bend in the knees.
- Keep your neck neutral; look toward the ceiling or slightly toward your toes.
- Avoid letting the legs drift higher than 6 inches to maintain maximum tension.
Pro tips
- Focus on 'shortening' the distance between your ribcage and pelvis to maximize abdominal recruitment and protect the spine.
- If you feel your lower back arching, lift your legs slightly higher until your spine flattens, then work on lowering them over time.
Make it harder
- Lift your head and shoulder blades off the floor into a 'hollow body' position to further engage the upper abdominals.
- Extend your arms straight overhead behind you to increase the lever length and difficulty.
Frequently asked
- What muscles does the lying floor 6 inch hold work?
- The lying floor 6 inch hold primarily targets the abs and obliques, and also works the glutes as secondary muscles.
- What equipment do you need for the lying floor 6 inch hold?
- The lying floor 6 inch hold requires no equipment — just your body weight.
- Is the lying floor 6 inch hold good for beginners?
- The lying floor 6 inch hold is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.