stamina wonder exercise bike fitnessDesigned for convenience, portability and versatility, the Stamina Wonder Exercise Bike packs a workout that's good for the whole body. Engage your core and legs with the bike. When you're ready, take it to the next level with the included Wonder Arms. The Wonder Arms help you strengthen and tone your arms, shoulders, chest and back. Exercises like chest press, curls, flies and many more are possible with the smooth bungee cord and pulley system.