Cardio

Cardio is the part of the gym floor members can use without a coach and without handling any weights, which is why it serves the widest possible audience, from a first-time member to someone in rehab. Whether it's a large commercial gym or a smaller residential or hotel gym, the number of cardio machines decides how many people can train at peak hours without waiting.

Footprint differs sharply from one machine to the next. A spin bike fits a 105 × 50 × 105 cm area, while a larger magnetic bike needs 125 × 50 × 125 cm. A treadmill takes 207 × 95 × 131 cm, and a recumbent bike needs 176 × 60 × 125 cm. Beyond the machine's own dimensions, allow for space on both sides and behind it, plus at least a metre of clearance between rows, or you'll get a bottleneck at peak hours.