Pilates is all about slow, controlled movements, but its fitness and health rewards are supercharged and you will walk away with feel-better benefits on day one. Probably the most well-known Pilates move—the Hundred—is all about abs. But exercises that target your tummy are hardly the only reason it’s a dynamo core workout. Most Pilates moves require you to keep proper alignment and challenge your stability to stay balanced, which helps fire up your midsection.