Boxing
Slip Bag Duck
The slip bag duck is a boxing drill in which you bend your knees to lower your head beneath a swinging bag. It trains defensive timing, leg control, and balance.
- Intermediate
- Compound
- Moderate injury risk
- Rest 45 sec
How to do it
- Give the bag a gentle push to start a small, predictable swing.
- Take your boxing stance facing the bag’s swing path, with one foot ahead of the other.
- Raise your hands beside your cheeks.
- Lower your head beneath the approaching bag by bending your knees.
- Stay below the bag’s path until it passes over you.
- Straighten your legs to return to your starting stance.
Form cues
- Keep your eyes forward.
- Keep your weight between your feet.
- Let your knees follow your toes.
Common mistakes
- Folding at the waistLower your hips with your chest upright rather than tipping your head toward the floor.
- Ducking too deepUse only enough depth to clear the bag comfortably.
- Bouncing through the duckUse a smooth descent and controlled rise instead of springing upward.
Safety
Mistimed ducks can let the swinging bag strike your head or face. A fast swing or fatigue makes it harder to judge clearance and maintain balance.
- Check the suspension and clear the entire swing area before starting.
- Set the bag high enough to clear your head with a comfortable knee bend.
- End the set when you can no longer time each duck reliably.
- Step outside the swing path and let the bag settle before making adjustments.
Practice an unloaded boxing duck first if knee, hip, or back discomfort limits your depth, or if you cannot reliably clear the moving bag.
Muscles worked
Primary muscles
Secondary muscles
Equipment
- Slip Bag
Sets and reps
- Sets
- 2–3
- Target
- 8–12 reps
- Rest
- 45 sec
Count one duck and return to your stance as one repetition.