Medicine Ball Sit-Up
A weighted sit-up variation using an overhead medicine ball to add resistance to a full sit-up.
Equipment: Medicine ball
How to do it
- 1Lie on your back with knees bent and feet flat on the floor, holding a medicine ball with both hands extended straight overhead.
- 2Brace your core and curl your torso up off the floor, keeping the ball extended in line with your ears as you rise.
- 3Continue until your torso is vertical or nearly vertical, pausing briefly at the top.
- 4Lower back down under control, keeping tension in your abs the whole way.
Common mistakes
- Using the arms to fling the ball forward for momentum instead of driving the movement from the abs.
- Yanking the torso up quickly instead of curling up under control, which increases strain on the lower back.
Sets & reps by goal
| Goal | Sets | Reps | Rest |
|---|---|---|---|
| Strength | 2-3 | 8-12 | 60-90 sec |
| Build muscle | 2-3 | 10-15 | 60-90 sec |
| General fitness | 2-3 | 12-15 | 45-60 sec |
Ranges reflect the same goal-based logic used by the workout plan tool. These are practical starting ranges rather than exact requirements; actual set count in a generated plan also depends on how often this muscle group appears elsewhere in your week.
Frequently asked questions
Is the Medicine Ball Sit-Up safe for beginners?
Generally, yes. The Medicine Ball Sit-Up is tagged as beginner-friendly in GetFitArchitect's exercise database, meaning it doesn't demand much prior strength, mobility, or technique. Start with a version you can control throughout, whether that means a lighter weight, an easier variation, or a shorter hold, progress gradually, and stop if something hurts beyond normal muscle effort.
What muscles does the Medicine Ball Sit-Up work?
The primary mover is your core. As a core movement, it also involves your hip flexors and lower-back stabilizers.
What can I substitute if I don't have a medicine ball for the Medicine Ball Sit-Up?
The Cable Crunch trains the same muscle with a similar movement, so it's a reasonable swap if you don't have a medicine ball available. The loading won't match exactly, so expect to adjust the weight or reps.
See the Cable CrunchRelated exercises
Learn more
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