Crunches feel like work. Your neck hurts, your back aches, you're sweating. But your abs? Barely engaged. Most people do sit-ups wrong, using momentum, straining everything except the muscles they're trying to target. You can do 100 crunches and activate your abs less than 20 seconds of proper muscle stimulation. The problem isn't effort. It's targeting. EMS contracts your entire abdominal wall, deep stabilizers included, without you compensating with other muscles. Every pulse hits exactly where it should.