Stomach Flattening Exercises – Work Your Abs 70% Harder Without Working Out More
The next time you do arm raises or chest presses with weights, do it lying on a stability ball instead of a bench.
This is because studies have shown that women who did arm raises with weights while lying on a stability ball instead of a bench worked their abdominal muscles 70% harder.
The ball’s mobility forces muscles to engage to [...]
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