What Do Ab Stimulators Do? The way ab stimulators work is by electric currents passing through your core/abdominals stimulating the ab muscles, this is why they are called electrical muscle stimulation devices or EMS devices. Do Ab Stimulators Actually Work? Yes, is the short answer. However, they don’t work exactly how you think. Ab stimulators … Continue reading Ab Stimulator: Do Ab Stimulators Really Work? Benefits & Tips.