At PRIMAL, we've noticed that air bikes have become a hugely popular piece of equipment for those interested in high intensity cardio workouts in both commercial and home gym spaces. Rather than having a wheel, these bikes use wind resistance, which means the harder you pedal, the more resistance you face. This makes them perfect for HIIT and anyone looking to build up their endurance and strength in a single machine. With air bikes, you work both your upper and lower body, so it's a full-body workout that can really help you push yourself to the limit.