2.5.23 - Why are Air Bikes considered more efficient than spin bikes?

Both Air Bikes and spin bikes are types of stationary bikes, but Air Bikes provide a more efficient workout, requiring less time on the Air Bike than you require on the spin bike to burn the same amount of calories.

Why?

• Air Bikes include four power generation points; the two pedals and two handles - this means that your upper and lower body are both working in unison. 
• The resistance increases the faster you go due to the fan blades.