We see a lot of talk about having good posture and what to do to achieve it but what is good posture? It’s probably easier to think of it as how you would stand if you didn’t sit at a desk for 8 hours a day or hadn’t picked up any injuries from playing your chosen sport. You’re spine has natural curves that get disrupted if you don’t pay attention to how you are sitting and the effects of long periods of doing so even with good posture and what happens to how you move when you get injured. Your hips, knees, ankles, shoulders are all affected by the sitting for long periods and obviously can all be injured playing sport. If your pelvis if not constantly pulled forward and down by overly tight tissues will sit relatively level, your shoulder girdle would sit comfortably back if it wasn’t being pulled forward by your tight pec’s etc (this is simplifying it but you get the point) . All the need for holding yourself in “good posture” would be gone because it would happen on it’s own and a what you may find difficult to do at the moment would be happening without any conscious thought on your part because the imbalances you are trying to counter wouldn’t be there.