Just Carla and I today. We did 3 very tough runs and although it does not look like we're moving fast, the effort level was intense. We are both averaging approx' 48 seconds per run, but due to time constraints (I've got to go to work) we had to leave. But oh what joy, I'm doing Greg Francis's Fit2Fite class tonight and not looking forward to flogging myself for an hour. I'll keep you posted!!