I dont do the 30 mins per day, but i do go to the gym 3/4 times a week and do 2 classes each day, which vary from 1 hour per class to 2 hours per class, prior to each class i also walk 30 mins on the treadmil as a warm up before the session... classes are monday wednesday sunday, but i do go inbetween for swimming and just the gym as well...
K xx