Flying Knee Drill: A Complete Guide
Quick Intro
Flying Knee Drill is a Martial Arts Drills exercise performed by sprinting or stepping forward, jumping off the lead leg and driving the opposite knee upward into the target while airborne, landing balanced. Committing the jump forward and up together is what gives this knee strike its reach and impact.
Equipment Needed
No equipment is required. An open patch of floor with enough room to step or sprint forward into the jump is all this drill needs.
Why It Matters
Closing distance, launching off one leg and driving the other knee upward all happen within a single, fast airborne motion, which takes agility and power together. A muscle at the front of the hip (hip flexors, iliopsoas) drives the knee at the peak of the jump, and the largest glute muscle (gluteus maximus) and the front of the thigh (quadriceps, rectus femoris) power the takeoff. A calf muscle (gastrocnemius) and a deeper calf muscle (soleus) drive the jump off the lead leg, and the abdominal muscles running down the front of the stomach (rectus abdominis) brace the trunk while airborne. The muscles along the sides of the abdomen (obliques) help control the body’s rotation, and a muscle at the back of the thigh (hamstrings, biceps femoris) supports the landing.
When to Do It
Flying Knee Drill works well within a clinch or striking session that includes explosive entries, added once the standing knee strike already lands cleanly and before sparring or pad work. Two to three sessions a week is a reasonable pace for building this jump, with rest days between sessions given the impact involved.
Anyone with a current knee, hip or ankle issue should get individual guidance before adding this drill, since the jump and the landing are both high-impact for those joints.
Getting Ready
Driving the knee upward from a small hop in place, without the forward step yet, checks the airborne mechanics this strike depends on. A few slow, low-height jumps preview the full flying knee before maximum height and distance are attempted.
Step-by-Step Instructions
- Close the distance. Step or sprint forward toward the target.
- Launch off the lead leg. Jump off the lead leg, driving upward and forward together.
- Drive the knee. Fire the opposite knee upward into the target at the peak of the jump.
- Land balanced. Come down under control, ready to follow up.
How Many, How Often
Flying Knee Drill is dosed by reps, with each full jump-and-strike counting as one.
| Level | Where you’re at | What to do |
|---|---|---|
| Beginner | New to jumping off one leg while driving the other knee | 3 sets of 3 to 4 reps per side |
| Intermediate | The jump and the knee drive connect smoothly | 3 to 4 sets of 4 to 5 reps per side |
| Advanced | Comfortable committing fully to height and distance | 4 sets of 5 to 6 reps per side |
Committing the jump forward and up together matters more here than how many reps are completed in a set, since a jump that goes only upward or only forward loses either the reach or the impact.
Modifications and Variations
As an easier version, Skip Knee Drill performs the same takeoff off a small skip step, with less time in the air and the same knee-drive pattern.
As a harder version, Flying Knee — Full Commitment sprints into the strike with a fully committed step and maximum jump height, driving the knee at maximum extension before landing balanced and ready to follow up.
Common Mistakes to Avoid
Launching mostly upward with little forward drive. This strands the knee short of a target that isn’t standing directly underneath the jump’s peak. The jump covers forward distance as well as height.
Hesitating right before the takeoff. Slowing down or second-guessing the jump at the last step turns a committed strike into a half-height one with little power behind it. The step into the jump commits fully once it begins.
Landing stiff-legged. Coming down with the knees locked straight after the jump jolts the joints and leaves no room to absorb the impact. Bending the knees to absorb the landing keeps the drill safe to repeat.
After Your Set
A few slow hip circles on the striking leg release the hip after repeated jumps. A standing quadriceps stretch, holding one ankle behind the body for a few breaths, lengthens the legs that drove the takeoff.
Going Deeper
Launching a knee strike off a single-leg takeoff asks for explosive coordination the grounded version does not. The jump tends to drift more upward than forward, especially in the first several sessions. Slowing the approach down and covering distance before worrying about height fixes this faster than repeating a jump that goes nowhere but up.
Someone new to this drill generally manages a controlled, low-height jump within the first few sessions, then works toward a fully committed flying knee with height and distance over the following couple of weeks.
How to Know You’re Improving
- A jump that covers forward distance as well as height
- A takeoff that commits fully once the step into it begins
- A landing that stays balanced with the knees bent
- A strike that holds up at maximum height and distance
Forward travel in the jump and a soft landing matter more than how many reps are completed.
Muscles Worked
- Iliopsoas (the hip flexor group at the front of the hip, snapping the knee up at the top of the jump)
- Gluteus Maximus (the largest glute muscle, extending the takeoff hip to get height)
- Rectus Femoris (a front thigh muscle that crosses both the hip and knee, straightening the jumping knee to leave the floor)
- Gastrocnemius (a calf muscle, delivering the last push off the lead foot)
- Rectus Abdominis (the abdominal muscles running down the front of the stomach, curling the trunk toward the rising knee in mid-air)
- Obliques (the muscles along the sides of the waist, stopping the body twisting while airborne)
- Biceps Femoris (a muscle at the back of the thigh, absorbing the landing on the way down)
- Soleus (a deeper calf muscle beneath the gastrocnemius, holding the ankle firm at takeoff and again on landing)
FAQ
Why does the jump need to travel forward as well as up? A knee strike that only rises in place misses a target standing a step away, while a jump that travels forward and up together closes that distance at the same time the knee fires.
Is this drill harder than throwing a standing knee strike? Yes, launching the strike off a single-leg takeoff takes explosive power and coordination a grounded strike doesn’t require.
Is some knee or hip fatigue after this drill normal? Yes, a worked feeling through the knee and the hip after a full set of jumps is expected. A sharp pain in the knee, hip or ankle is a different signal, worth pausing for and mentioning to a doctor or physical therapist.
Is there a lower jump to learn this strike with? Yes, Skip Knee Drill keeps the same knee-drive pattern on a small skip step, a way to build the mechanics before adding a full approach.
How often should the flying knee be drilled? Two to three times a week, with rest days between sessions given the impact involved, suits most people building toward this explosive strike.
Related to Skip Knee Drill as the easier version built around a small skip step and Flying Knee — Full Commitment as the harder version at maximum height and distance.