Air is suspension training that incorporates those moves with yoga and Pilates all on aerial silk hammocks, like the ones you might see at Cirque de Soleil. You can burn an average of 700 calories in a 50minute class. It’s not just about calories. Because you’re elevated, Air challenges your muscles to extremes. Aerial fitness strengthens your core, helps you build lean muscles, increase flexibility and you can lengthen and tone your physique in record time.