Exercise guide
Lying Floor Single Leg Negative Dragon Flag
- Advanced
- Compound
- Rep-based
- Waist
This advanced core exercise focuses on the eccentric (lowering) phase to build extreme abdominal strength and anti-extension control. By using a single-leg tuck, you reduce the lever length to master the tension required for a full dragon flag while heavily engaging the lats and triceps for stability.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Lie on your back on the floor with your head positioned against a sturdy anchor point, such as a wall, heavy rack, or weighted bench.
- Reach overhead and grip the anchor point firmly with both hands, keeping your elbows tucked in.
- Lift your hips and legs vertically until your weight is supported by your upper back and shoulders, ensuring no pressure is on your neck.
- Tuck one knee tightly toward your chest while keeping the other leg fully extended and pointing toward the ceiling.
How to do it
- Inhale deeply and brace your entire core, creating a rigid line from your shoulders to the foot of the extended leg.
- Exhale slowly as you lower your torso and the extended leg toward the floor in a controlled, 3-5 second negative phase.
- Maintain a straight line through your hips and the extended leg, preventing any hinging at the waist.
- Stop just before your lower back or glutes touch the floor, then drop your hips to reset and switch legs for the next rep.
Form checklist
- Keep your weight on your shoulder blades and upper back, never on your neck.
- Pull hard on the anchor point to engage your lats and triceps, which stabilizes the upper body.
- Ensure the lower back does not arch; if it does, stop the descent and reset.
- Keep the tucked knee pulled as close to the chest as possible to maintain control.
Pro tips
- Think of 'pulling' the anchor point toward your head to create maximum full-body tension and lat engagement.
- Squeeze the glute of the extended leg to help maintain a neutral pelvis and prevent lower back strain.
Make it harder
- Increase the eccentric duration to 8-10 seconds per repetition.
- Slowly move the tucked knee further away from your chest to increase the lever length and difficulty.
Frequently asked
- What muscles does the lying floor single leg negative dragon flag work?
- The lying floor single leg negative dragon flag primarily targets the abs, lats, and obliques, and also works the erector spinae as secondary muscles.
- What equipment do you need for the lying floor single leg negative dragon flag?
- The lying floor single leg negative dragon flag requires no equipment — just your body weight.
- Is the lying floor single leg negative dragon flag good for beginners?
- The lying floor single leg negative dragon flag is rated advanced. Build a base with simpler variations first, then progress to it with light load and strict form.