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Medicine ball: which type to buy, what weight to choose, and how to use it

By the Life in Good Form editors. Updated 2026-10-14.

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Quick answerA medicine ball is a weighted ball you hold, lift, pass or throw for strength and core exercises. Choose a rubber ball that bounces for floor and partner drills, a soft-shell ball for wall throws, or a dead slam ball if you want to slam it. For controlled strength moves, start light enough to do about 12 to 15 good-form reps; use exercise-specific coaching for throws, and check the maker's limits: many medicine balls are not made for overhead slams.
Our picks at a glance

Compare the picks and what to watch out for

Types of medicine ball

TypeExample (Rogue)Good forNot for
Soft-shell wall ball14 in diameter, vinyl shell, 4 to 30 lbWall ball throws, squats, sit-ups, trunk twists, pressesSlams; Rogue says it is not intended for slams
Rubber bounce ballRubber, textured grip, 6 to 30 lb; 8.5 in to 11.25 in acrossLateral wall throws, partner passes, bouncing drills, squats and sit-upsOverhead slams; Rogue warns of strong rebound
Slam ballDead, low-bounce ballOverhead slams to the floorDrills that need a rebound

The bounce matters for safety. Rogue says its rubber medicine ball is not recommended for overhead slamming because of its strong rebound, and points people who want to slam to a dedicated slam ball. It also says slamming its soft wall ball from overhead voids the warranty. If slams are your main use, see our slam ball guide.

How to choose medicine ball weight

Mayo Clinic's rule for strength training is to choose a weight heavy enough to tire your muscles after about 12 to 15 repetitions, and it lists medicine balls among the tools you can use. For a medicine ball that means:

Size matters too. Rogue's rubber balls get bigger as they get heavier, from 8.5 inches at 6 and 8 lb to 11.25 inches at 15 lb and up, while its wall balls are all 14 inches across. Compare the diameter with your hand span. Check that you can hold it securely with both hands before adding speed; catchability depends on its weight, shell and your technique.

Medicine ball exercises for abs and core

Rogue lists trunk twists, squats, sit-ups and presses among common medicine ball uses. Examples to discuss with a trainer:

  1. Seated trunk twist. Sit with knees bent, hold the ball at your chest, and rotate slowly side to side.
  2. Medicine ball sit-up or crunch. Hold the ball on your chest. Mayo Clinic gives arms-crossed-on-chest advice for an unweighted crunch, rather than locking the hands behind the head. It does not prescribe this weighted variation; learn an unweighted version first.
  3. Goblet squat. Hold the ball at your chest and squat.
  4. Chest pass to a wall. With a ball that bounces, pass and catch.

For the unweighted core exercises on its page, Mayo Clinic suggests one set of 12 to 15 repetitions of each, keeping your back in a neutral position and breathing freely. Strength train at least two times a week.

Safety

What to look for when you buy

Rubber medicine ball with textured grip

Best for: Home core work, squats and partner or wall passes

Rogue's rubber balls bounce back on wall throws and floor drills, have a tread-pattern grip, and are smaller than wall balls, so compare their size with your grip.

Watch out: Do not slam it overhead; Rogue warns the rebound is strong. Check the shell, grip and intended uses of the particular listing.

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Soft-shell wall ball

Best for: Wall ball throws and squat-to-throw conditioning

Compare the shell and diameter with your intended throwing drill. Rogue's wall balls are 14 inches across at every weight and come in weights from 4 to 30 lb.

Watch out: Not made for slams; Rogue says overhead slamming voids its warranty.

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Light medicine ball for core work

Best for: Beginners, older adults and ab exercises

Mayo Clinic advises a weight that tires the muscles in about 12 to 15 reps; for twists and crunches that is often a light ball.

Watch out: Too light for squats once you get stronger; you may want a second ball later.

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Slam ball

Best for: Overhead slams and power work

Makers including Rogue point people who want to slam to a dedicated slam ball rather than a bouncing medicine ball.

Watch out: Low bounce means it is not right for rebound drills; check the maker's guidance for wall use.

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When to talk to a doctor: Talk to your doctor or physical therapist before medicine ball core work if you have back problems, osteoporosis, a hernia, or are pregnant or recently postpartum. Stop if an exercise causes pain, and get checked if back pain spreads down a leg or comes with numbness.

Questions people ask

What weight medicine ball should I use?
One that lets you do about 12 to 15 controlled reps, as Mayo Clinic advises for strength training. That is general lifting advice, not a throw prescription. Ask a trainer about the load and technique for throws.
What is the difference between a medicine ball and a slam ball?
Many medicine balls bounce, and makers like Rogue say they are not for overhead slams. A slam ball is built to hit the floor without a strong rebound.
Can you use a medicine ball for ab workouts?
Yes. Trunk twists, sit-ups or crunches with the ball on your chest are common. Ask your provider first if you have back problems or osteoporosis.
Can I throw a medicine ball against a wall?
Use a ball made for it: a soft wall ball or a rubber ball rated for wall throws. Stand where a rebound cannot hit anything behind you.
Is a medicine ball the same as a stability ball?
No. A medicine ball is small and weighted. A stability ball is large and air-filled for sitting or balance work.

Sources

Sources checked 2026-10-14.