The side to side medicine ball slam is a ballistic core exercise performed with a rubber medicine ball, driven from overhead to the floor beside alternating feet to train theobliques. Where a straight slam drops the ball between the feet, the diagonal path here adds trunk rotation and a shift of weight onto the near leg, so the obliques and lats work together on every throw. The catch off the bounce turns the exercise into a continuous rhythm. Coaches program it as a power primer early in a session or as a conditioning finisher.
What Muscles Does the Side to Side Medicine Ball Slam Work?
- Primary: External and internal obliques
- Secondary: Latissimus dorsi (lats), rectus abdominis (abs), triceps brachii
- Tertiary: Gluteus maximus, anterior deltoid, forearm flexors (grip)
How Do You Set Up for the Side to Side Medicine Ball Slam?
Choose a low-bounce rubber medicine ball light enough to throw hard, and clear a floor space with nothing breakable within an arm's reach. Stand with the feet a little wider than the hips, knees soft, and hold the ball at chest height with the fingers spread on its sides. Brace the trunk and lift the ball straight overhead with the arms nearly straight, ribs down, weight even across both feet.
How Do You Perform the Side to Side Medicine Ball Slam?
- Reach the ball overhead with the arms long and the ribs pulled down so the back does not arch.
- Rotate toward the left by turning the hips and shoulders together and shifting weight onto the left foot.
- Slam the ball down to the floor just outside the left foot, folding at the hips and knees as the arms whip through.
- Catch the ball on the bounce with both hands in a quarter squat, knees tracking over the toes.
- Sweep the ball overhead in one arc across the body, rotating back through centre toward the right side.
- Slam to the right side and catch again, so each rep ends with the ball overhead at centre ready for the next left slam.
What Are the Key Form Cues?
- Throw with the trunk, not the arms: the ball gains speed from the hips and ribs folding, the hands only steer it.
- Turn the belly button toward the target: rotate through the hips so the shoulders and pelvis face the slam point together.
- Exhale sharply at the release to time the abs with the throw.
- Keep the feet planted; let the heels lift only on the overhead reach.
- Catch the ball soft and low so the bounce feeds the next arc instead of stopping it.
What Are the Most Common Mistakes?
- Picking a ball too heavy to accelerate: the slam becomes a slow lower and the power work disappears, so use a ball you can throw hard for every rep of the set.
- Slamming with the arms only while the trunk stays upright: the obliques never rotate and the shoulders do the work, so fold at the hips and turn before the arms come through.
- Rotating from the lower back with the hips locked: the lumbar spine twists under speed at the bottom of the slam, so let the hips and feet turn with the shoulders.
- Bending forward to catch a dead ball: the back rounds under fatigue, so catch on the bounce or squat to the ball.
- Slamming straight down between the feet: the side-to-side pattern is lost, so aim just outside the lead foot.
What Are the Best Side to Side Medicine Ball Slam Variations?
- Medicine ball slam: the straight-down version with no rotation, the regression for learning the throw.
- Medicine ball side chop: a slower diagonal chop with no release, the same rotation without a bounce to catch.
- Single-arm medicine ball slam: one hand behind a lighter ball, adding shoulder stability work.
- Rotational wall ball throw: the ball is thrown sideways into a wall at hip height, shifting the emphasis to horizontal rotation.
- Sandbag rotational slam: a sandbag replaces the ball for a heavier throw with no bounce and a dead-stop pickup.
How Do You Progress the Side to Side Medicine Ball Slam?
- Move to the next heavier ball once you finish every set at 12 slams a side with the ball still bouncing hard off the floor.
- Build from 6 slams a side to 12 before changing ball weight.
- Add a set at a time up to 5 sets, or a second session in the week.
- Speed up the arc from catch to overhead so the ball never rests at chest height between slams.
How Should You Program the Side to Side Medicine Ball Slam?
Place the side to side medicine ball slam early in a session as a power primer before heavy lifts, or at the end as conditioning. Train it 2 to 3 times per week for 3 to 5 sets of 6 to 12 slams a side, resting 60 to 90 seconds for power and 30 to 45 seconds as a finisher. Pair it with a plank or a Pallof press so the obliques also train anti-rotation.