Exercise ball exercises
A large air-filled ball, about knee to hip height. Resting your heels on it turns a hip bridge into a hamstring curl, which is otherwise a machine-only movement.
On its own Exercise ball drives no muscle to target - it is support, not load. It appears in 1 movements alongside other equipment.
Where to find it: Oversized inflatable balls, usually stacked in a corner near the stretching area.
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