I grew up playing pretty much every major North American sport except for Basketball. Somehow managed to play football and hockey for years without suffering more than a sprained knee. I even played soccer at a highly competitive level and some managed to stay injury-free until I stopped playing at 18. However when I was 19, playing a casual game of soccer with some friends, I got slide tackled by my friend's raging Irish dad. I tried to jump it, but just caught my foot on him and bailed hard, landing directly on my shoulder. It felt like when I landed, my arm just planted and inertia just sent the rest of my body driving forward. I suffered a severe dislocation and now 8 years later, the joint still suffers from chronic instability to the point that I can't throw a baseball or a football to save my life nor, without experience pain/major discomfort. It's also at constant risk of dislocating again at the slightest knock at the wrong angle. My other should is also ....ed. I've wrecked on my bike plenty of times, been hit by cars, etc. without so much as knocking out a tooth. But one day I was hauling a bunch of .... around and when one of the bags I was carrying came loose and when I tried to swing it back over my shoulder, I just kind of went down reeeeaaaally slowly. Tried to break the fall with my arm, but the shoulder just popped right out on contact. Luckily it was just a sublaxation that time.