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Overview & When to Use
More dramatic and committed than a slip, the duck removes your head entirely from the horizontal plane of attack. This defensive movement exploits the geometry of wide punches — hooks and overhands travel in an arc, and by dropping below that arc's lowest point, you make the punch pass harmlessly over your head while loading your legs for an explosive counter.
When to use
Use against wide, looping hooks and overhands where a standard slip would not provide enough lateral clearance to avoid the punch. The duck takes your head completely below the arc and positions you at close range with loaded legs — ideal for body shots, uppercuts, or clinch entries. Particularly effective against taller opponents whose hooks travel on a higher arc.
Common Mistakes
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- Ducking by bending at the waist instead of the knees — this tilts your head forward and exposes the back of your skull, which is vulnerable to looping punches and creates spinal injury risk.
- Staying in the ducked position too long — while crouched you cannot generate offensive power, your mobility is compromised, and you are vulnerable to uppercuts and knees.
- Ducking under straight punches instead of wide ones — straight punches follow a linear path and will simply adjust downward to find your head as you duck, making the duck ineffective and dangerous.
- Closing the eyes during the duck out of flinch reflex — this eliminates your ability to time the counter and leaves you blind to follow-up attacks.
Pro Tips
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- Mike Tyson ducked under punches constantly from his peek-a-boo stance — study how he used the duck to close distance and immediately rose with devastating uppercuts powered by his legs.
- The duck transitions naturally into body shots and uppercuts because your legs are already loaded in a deep bend — the rising motion adds kinetic energy from the ground up through the kinetic chain.
- Practice on the slip rope set at progressively lower heights until you can duck smoothly at full speed without losing balance or closing your eyes.
- Combine the duck with a lateral step to emerge at a new angle rather than popping straight back up into the opponent's follow-up punch.
Conditioning Drills
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- Deep Squat Holds: Hold a parallel squat for 45 seconds, rest 30 seconds, repeat for 4 sets to build the leg endurance needed for sustained ducking exchanges.
- Slip Rope Low Setting: Set the rope at shoulder height and practice ducking under at fighting speed for 3 rounds of 3 minutes with continuous movement.
- Partner Hook-Duck Drill: Partner throws controlled wide hooks while you duck and rise with a counter uppercut — 3 rounds of 2 minutes each, alternating sides.
Q1 of 3
Which muscle group is primarily engaged when performing the Duck Under?