Reddit reviews The Body in Action: You Can Keep Your Joints Young

Boot camp is often rushed exercises with poor form, while sports amongst grown-ups often lead to the 'weekend warrior' phenomenon. Like other commenters, I am lucky enough to run long distances with some amazing people in their 70s, however there is a big survivor bias there.

You would be right to focus on strength as you get older. Movements requiring more agility and elasticity (like side stepping in sport) are not going to be as kind to you. However assuming you are young now, you can do anything, just use good form so you don't develop injuries, both acute and more long term. Warm up correctly, learn how to land safely, and fix your niggles as soon as they happen.

I would highly recommend this book: http://www.amazon.com/The-Body-Action-Joints-Young/dp/1741141184 . It has great explanations of how joints work. It is not very useful for acute injuries but is great for degenerative joint processes.