All they do is chaparone you around the gym showing you how to use the machines and weights properly. If you are a member of a gym, i would recommend you speaking to someone on the 'fitness team' who can help you in achieving your goals, whether its weight loss or improving general fitness, they can design a programme that is designed to help you. It is a case of getting motivated on your own, but if you can, go with a friend or partner, or set your self a goal. Say by a certain time period i want to fit in my new jeans! It is easier said than done, i enjoy the gym but don't go as often as i should! Good Luck! x