Doing core strength exercises on unstable surfaces increases balance, coordination, flexibility, and muscular endurance, but not necessarily more so than doing the exercises on stable surfaces, according to research published inBMC Sports Science, Medicine and Rehabilitation.
Researchers had teens do a basic core strengthening workout twice a week for six weeks. The workout was a 30-minute circuit session, rotating among three key core exercises: cross curl-ups, side bridges, and bird dogs. Half of the teens did the exercises in the conventional manner on a stable surface.
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