The donkey kick is one of those exercises that looks ridiculously easy and, honestly, kind of silly. You're on all fours kicking your foot at the ceiling. It doesn't look like much. But when done correctly, with a real squeeze at the top and your core actually braced, it's one of the best glute activation exercises you can do without any equipment.
Here's the catch though. Most people do donkey kicks wrong. They arch their back, swing their leg, and feel it everywhere except the glute. A 2011 study published in the Journal of Orthopaedic & Sports Physical Therapy found that quadruped hip extension exercises produce high gluteus maximus activation when performed with controlled form (Reiman et al., 2012). But that "controlled form" part is doing a lot of heavy lifting in that sentence. Speed it up or arch your back, and the activation drops off fast.
This guide covers how to do donkey kicks properly, the mistakes that kill your glute activation, and how to pair them with fire hydrants for a complete glute warm-up.
Quick Facts
| Primary Muscles | Gluteus maximus |
| Secondary Muscles | Hamstrings, core stabilizers, gluteus medius |
| Equipment | Bodyweight (no equipment needed) |
| Difficulty | Intermediate |
| Movement Type | Isolation · Unilateral · Hip extension |
| Category | Strength |
| Good For | Glute activation, warm-up, mind-muscle connection, rehab |
How to Do Donkey Kicks (Step-by-Step)
- Get on all fours. Hands directly under your shoulders, knees directly under your hips. Spine neutral. Not arched up, not sagging down. Look at a spot on the floor about a foot in front of your hands to keep your neck in line with your spine.
- Brace your core. This is the step people skip, and it's the most important one. Tighten your abs like someone's about to poke your stomach. This prevents your lower back from arching when you lift, which is what causes people to feel it in their back instead of their glute.
- Drive one foot toward the ceiling. Keep your knee bent at 90 degrees the entire time. Push through your heel, not your toes. Lift until your thigh is roughly in line with your torso. That's it. No higher. If you go higher, your back arches and the glute stops doing the work.
- Squeeze at the top. Hold for a full second. Actually squeeze. You should feel the contraction deep in the glute, not in your lower back. If you can't feel it in the glute, you've gone too high or your core has relaxed.
- Lower slowly. Bring your knee back down under control. Stop just before it touches the floor, then drive back up. Don't let your knee slam down between reps. Complete all reps on one side before switching.
Coach Ty's Tips: Donkey Kick
These come straight from Coach Ty, FitCraft's 3D AI coach. They address the form mistakes Ty catches most often:
- Ceiling, not sky. People try to kick as high as possible thinking more range equals more work. Wrong. Your thigh only needs to reach hip height. Going higher arches your back and steals the tension from your glute. Think of pressing your foot into a low ceiling right above you.
- Heel leads, toes follow. Drive through your heel, not your toes. This shifts the contraction from your hamstring to your glute. If you feel the back of your thigh cramping, you're toe-dominant. Flex your foot and push the heel up.
- Lock that core down. Your hips and shoulders should not move. At all. The only thing moving is the working leg. If your torso shifts, rocks, or rotates, your core has checked out. Ty flags this in real time.
- Slow is the point. This isn't a power exercise. Take 2 seconds up, hold 1 second, take 2 seconds down. Rushing through donkey kicks is like doing bicep curls by swinging the weight. You're moving, but the right muscles aren't working.
- Pair with fire hydrants. Donkey kicks hit gluteus maximus (hip extension). Fire hydrants hit gluteus medius (hip abduction). Together they cover the full glute complex. Do them back to back as a superset for your warm-up.
Common Mistakes to Avoid
Donkey kicks look simple but the form errors are sneaky. You won't always know you're making them unless someone tells you:
- Arching the lower back. This is mistake number one. When people try to kick higher, the lower back arches to create the illusion of more range. But the extra height comes from spinal extension, not hip extension. Your glute stopped working 3 inches ago. Fix: reduce the height and brace your abs harder.
- Swinging the leg. Using momentum instead of muscle. If you're swinging your leg up fast and letting it drop, you're getting maybe 20% of the benefit. Slow it down. If the exercise suddenly feels twice as hard, you were definitely swinging.
- Shifting your weight to one side. As you lift your right leg, your body naturally wants to shift left. This takes tension off the working glute. Press both hands firmly into the floor and keep your weight centered. Imagine balancing a cup of water on your lower back.
- Forgetting to breathe. Sounds basic, right? But people hold their breath during donkey kicks all the time. Exhale as you lift, inhale as you lower. Holding your breath increases intra-abdominal pressure unnecessarily for an exercise that doesn't need it.
- Pointing the toes. Pointing your toes shifts the work toward your hamstring. Flex your foot and drive through the heel to keep the glute as the primary mover.
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Variations and Progressions
Standard Donkey Kick (Intermediate)
The version described above. Bodyweight, all fours, 90-degree knee bend. This is your starting point and, honestly, the version most people should stick with until they can do 3 sets of 20 with a full 1-second squeeze at the top and zero lower back involvement.
Resistance Band Donkey Kick (Advanced)
Loop a mini band around both thighs just above the knees, or use a longer band anchored under your hands with the loop around the sole of your working foot. The band adds resistance at the top where the glute is in its shortest position. This makes the squeeze significantly harder. Good progression once bodyweight gets too easy.
Straight-Leg Donkey Kick (Advanced)
Same setup, but extend your working leg straight instead of keeping the 90-degree bend. This lengthens the lever arm and makes the exercise harder. It also shifts slightly more work to the hamstring, so it's less of a pure glute isolation. Use it as a variation, not a replacement.
Complementary Exercises
- Fire hydrants: The perfect pairing. Donkey kicks work hip extension (gluteus maximus). Fire hydrants work hip abduction (gluteus medius). Together they're the gold standard glute warm-up.
- Glute bridges: Same primary muscle, heavier loading potential. Use glute bridges for strength and donkey kicks for activation.
- Bird dogs: Similar position with an anti-rotation core challenge added. Great for core stability alongside glute work.
Programming Tips
Donkey kicks work best as activation or accessory work. Here's how to slot them in:
- As warm-up: 2 sets of 15 per leg before squats, deadlifts, or any lower-body session. Pair with fire hydrants as a superset. No rest between exercises, 30 seconds between supersets.
- As accessory: 3 sets of 15 to 20 per leg at the end of a lower-body workout. Focus on the squeeze and slow tempo. Rest 30 to 45 seconds between sets.
- For rehab or glute activation: 3 sets of 12 to 15 per leg, daily if needed. Keep intensity low and focus entirely on feeling the glute contract.
- Frequency: Can be done daily as an activation drill. For strength purposes, 2 to 3 times per week.
FitCraft's AI coach Ty programs donkey kicks as part of your warm-up sequence when your plan includes lower-body compound movements. The 3D demonstrations show the exact height to kick (spoiler: it's lower than you think) and Ty will cue you when your back starts to arch.
Frequently Asked Questions
Do donkey kicks actually build glutes?
Yes, donkey kicks effectively activate the gluteus maximus when done with proper form and a deliberate squeeze at the top. They won't replace heavy compound movements for muscle growth, but they're excellent for activation, isolation, and building the mind-muscle connection that makes your compound lifts more effective.
How many donkey kicks should I do?
For most people, 3 sets of 15 to 20 reps per leg. Donkey kicks are a low-load isolation exercise, so higher rep ranges work better than trying to do heavy sets of 5. Focus on the squeeze at the top rather than rushing through reps.
What's the difference between donkey kicks and fire hydrants?
Donkey kicks push your foot toward the ceiling (hip extension), targeting the gluteus maximus. Fire hydrants lift your knee out to the side (hip abduction), targeting the gluteus medius. They're complementary exercises that work different parts of the glute complex, which is why they're often paired together.
Can donkey kicks replace squats?
No. Donkey kicks are an isolation exercise for glutes, while squats are a compound movement that trains quads, glutes, hamstrings, and core simultaneously under load. Use donkey kicks as a warm-up or accessory alongside compound movements.
Why do I feel donkey kicks in my lower back?
You're arching your lower back to lift your leg higher. Your core isn't braced, so your back extensors are taking over. Fix: brace your abs hard, reduce your range of motion, and focus on squeezing the glute. Your thigh only needs to reach hip height.