Using no electricity, this is the Compact Core Exerciser trainer that simulates cantering on a horse to strengthen and tone the core muscles. Exercisers sit on the padded saddle, rest their feet on a rubberized bar, and shift their weight backward to put the device’s drivewheel in motion. As the saddle rotates at a moderate 40 rpm or less, it requires the rider to engage lumbar muscles, abs, glutes, and thighs, building core strength to help prevent back injuries and improve balance and posture.

The Compact Core Exerciser