90-90 Hip Hinge
Primary
Hamstrings
Secondary
Glutes, Core, Hip Flexors
Equipment
Bodyweight
Difficulty
Intermediate
Type
Hinge
90-90 Hip Hinge
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The 90-90 hip hinge starts in the 90-90 hip position—one leg bent 90 degrees in front of you, the other 90 degrees behind—then hinges forward over the front leg to stretch the front hamstring under load. This combines hip mobility work with hamstring stretching in a unique ground-based position that also opens the hips.
When to use it
Use for warm-up, mobility work, or active recovery.
Who it's for
Those seeking hip mobility and hamstring flexibility.
Set up in the 90-90 position with your front shin perpendicular to your body. Hinge forward from your hips, not your spine, reaching your chest toward your front shin. Feel the stretch in your front leg hamstring. Return upright and repeat before switching sides.
Muscles worked: 90-90 Hip Hinge
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90-90 Hip Hinge form guide
- 1
Sit with one leg bent 90 degrees in front, other 90 degrees behind.
- 2
Keep front shin perpendicular to your body line.
- 3
Stack torso tall with core engaged.
- 4
Hinge forward from hips keeping spine neutral.
- 5
Feel stretch through front leg hamstring.
- 6
Return to upright position with control.
What are the best tips for the 90-90 Hip Hinge?
Maintain neutral spine throughout the hinge.
Focus on feeling stretch in front leg hamstring.
Keep back leg position stable during movement.
Use hands on floor for balance if needed.
When to Use the 90-90 Hip Hinge
Program 90-90 hip hinges for warm-up, mobility work, or active recovery sessions. They combine hip mobility with hamstring flexibility in one movement. Use them for moderate reps per side. They pair well with standing hip hinge movements.
What are common 90-90 Hip Hinge mistakes to avoid?
Rounding the spine instead of hinging at hips.
A compromised back position during the 90-90 Hip Hinge puts your spine under unnecessary shear force. Brace your core and maintain a neutral spine throughout the movement.
Losing the 90-90 leg position during movement.
Hip hinge movements like the 90-90 Hip Hinge demand precise mechanics. This mistake puts your lower back in a vulnerable position. Drive through your hips and let your Hamstrings control the movement.
Not engaging core before initiating hinge.
Without core engagement during the 90-90 Hip Hinge, your spine loses its protective brace. Think about tightening your midsection as if someone were about to push you — maintain that tension through every rep.
Rushing through the movement pattern.
Rushing through the 90-90 Hip Hinge reduces the time your Hamstrings spends under tension — which is one of the main drivers of growth. Aim for a controlled 2-second lowering phase on every rep.
Is the 90-90 Hip Hinge right for you?
Those seeking hip mobility and hamstring flexibility.
How to Program the 90-90 Hip Hinge
Lower reps with heavier weight builds raw strength. Your muscles and nervous system adapt to handle more load over time. This range is best for strength-focused goals.
This rep range keeps your muscles under tension long enough to trigger growth. Most people see the best muscle-building results in this zone. It balances strength and muscle size.
Higher reps with lighter weight builds muscular endurance and improves conditioning. This range is good for joint health and building work capacity.
General guideline: 3 sets of 10-12 reps per side. Rest 45 seconds.
What are good alternatives to the 90-90 Hip Hinge?
Seated Good Morning
Bodyweight Good Morning
Single Leg RDL
Other Variations
- Weighted 90-90 Hinge
- Elevated 90-90 Hinge
- 90-90 Hinge With Reach
Frequently Asked Questions About the 90-90 Hip Hinge
The 90-90 Hip Hinge primarily targets the Hamstrings, making it an effective exercise for hamstrings development. Secondary muscles worked during the 90-90 Hip Hinge include Gluteus maximus, Hip flexors, providing additional training stimulus. Stabilizer muscles engaged include Core, Hip rotators.
The 90-90 Hip Hinge is rated as intermediate difficulty, meaning it requires some training experience. Those seeking hip mobility and hamstring flexibility. Focus on proper technique and consider starting with easier variations.
For the 90-90 Hip Hinge, the recommended approach depends on your goals. 3 sets of 10-12 reps per side. Rest 45 seconds. For strength, use 6-8 reps per side. For muscle growth, perform 10-12 reps per side. For endurance, complete 12-15 reps per side.
Yes, the 90-90 Hip Hinge can be done at home with no equipment. It requires minimal space and is a great option for home workouts targeting hamstrings.
Good alternatives to the 90-90 Hip Hinge include: Seated Good Morning, Bodyweight Good Morning, Single Leg RDL. These exercises target similar muscle groups as the 90-90 Hip Hinge and can be used as substitutes based on your equipment availability, gym setup, or training preferences.
This Exercise Is in Your Plan
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Safety Notes
- Work within your available range of motion.
- Use padding under knees if needed.