Cleaning (making sure the gym is tidy), sales, answering phone calls, looking after the gym (make sure people know what they are doing) inductions, writing training programmes based on individuals and their goals, talking to members of the gym, booking classes, outreach. Also teaching classes such as spin (studio cycling) and circuits. I also teach gym floor classes on a daily basis and I really enjoy doing it.
By doing all of those I have built up more confidence by talking people and trying to offer them memberships. I also had to sell the gym in the positive way and persuade people that is the best gym that they can get.