And that’s exactly the thinking behind PureGym’s latest research was. After quizzing 149 managers of their gyms up and down the country, they gathered information on the most common training mistakes the experts see people making every day at their gyms. Because that way, we can all learn and better ourselves. So if you’ve reached a plateau with your fitness and are on the hunt for possible answers, take a look and see if any of these errors sound familiar.