Hi Amara. I believe that group exercise is definitely growing – particularly in these economic times. When you combine two very real issues facing us 1. the current economy, and 2. the obesity rate and need for regular exercise, I think that this gives rise to the need for “inexpensive” regular, programs of exercise and activity. This points to group exercise activities which can 1. be affordable, and 2. offer regular exercise.
I hope this helps.