Exercise guide
Lying Legs Triangle Drop
- Intermediate
- Isolation
- Rep-based
- Waist
The Lying Legs Triangle Drop is a dynamic core exercise that targets the lower abdominals and obliques by moving the legs in a controlled triangular path, enhancing rotational stability and hip flexor strength.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Lie flat on your back on a mat with your arms extended by your sides or tucked slightly under your glutes for lower back support.
- Extend your legs straight up toward the ceiling, pressing your lower back firmly into the floor.
- Engage your core and point your toes to create tension throughout the lower body.
How to do it
- Inhale as you lower your straight legs diagonally toward the floor on one side, stopping just before your lower back lifts.
- Sweep your legs horizontally across the bottom, keeping them 2-3 inches above the floor, until they reach the opposite side.
- Exhale as you pull your legs back up to the starting vertical position to complete the triangle shape.
- Alternate the direction of the triangle for each repetition to ensure balanced engagement.
Form checklist
- Keep your lower back pressed into the mat at all times to protect the spine.
- Maintain straight legs to maximize the lever length and abdominal tension.
- Move with control; avoid using momentum to swing the legs through the pattern.
- Keep your head and neck relaxed on the floor unless performing an advanced variation.
Pro tips
- Focus on 'pulling' with your obliques as you sweep the legs across the bottom and back up to center.
- Slow down the tempo during the horizontal sweep to significantly increase time under tension for the lower abs.
Make it harder
- Hold a light dumbbell or medicine ball between your feet to increase resistance.
- Lift your head and shoulder blades slightly off the floor to maintain constant tension in the upper abdominals.
Frequently asked
- What muscles does the lying legs triangle drop work?
- The lying legs triangle drop primarily targets the abs and obliques, and also works the glutes as secondary muscles.
- What equipment do you need for the lying legs triangle drop?
- The lying legs triangle drop requires no equipment — just your body weight.
- Is the lying legs triangle drop good for beginners?
- The lying legs triangle drop is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.