A leader changes a room or the gyms energy when they enter. It is important that this change is positive rather than negative. When entering a room it always helps if the first thing out of your mouth is a compliment to someone like “coach, your looking sharp today, new shoes?” or “Mike how much you bench in weights today? Wasn’t that a PR?”. It’s ok to joke around and have fun, just make sure it is all positive in nature. If the first thing you say when you enter they gym is “Mike did you even lift 155 on bench today? Weak!” your teammates probably wont respect you and they may not see you as a leader.