Hello sleepy hun , I have no idea but if you join a gym as a member , you should be shown how to use all the equipment for your ability at this stage , and advised on the time and regimes tailored to you personally. :-) xxxxxx
I do three times a week for about 50mins each time. I lost a stone when i first started (even though i was not on a diet) and have now stuck at at size 8.