how to burn calories in a small space

The total body conditioning class I teach is always packed — like 70 people. Each participant literally gets about a 3 x 3 foot area to move in, and we use a step platform, hand weights and a resistance band. I had a gal after class today come up to me and say, “We are packed in this room like sardines, but we still get such a great workout.” She’s correct. I often remind the class that we are burning like 600 calories yet barely moving out of our little space — that’s amazing.