After you've been working out for a while, it's easy to think you know all you need to get by. While that may be true to a certain extent, by closing yourself off to new ideas you are guaranteeing that your workouts will stagnate, your progress will stall.
That brings you to the all important question – do you need a trainer? It's a good one to ask. After all, if your gym has properly trained, qualified staff, the coaches should be the best informed people in the club.
Once you start looking at what you are doing, you will likely find that there are many areas where professional help could freshen up your workouts. So let's understand what circumstances might lead you to answer yes to the question, "Do you need a trainer?"