What are the best ways to prevent shoulder injuries?

I've been doing bench presses, incline presses, shoulder presses, and lat pulls, all of which work my shoulders. I've noticed that my left shoulder in particular has been making popping sounds during the incline press in particular. Am I doing something wrong? Any specific stretches I can do? Is it just overexertion? The last thing I want to do is hurt myself when I'm trying to stay fit.

Thanks :)

Most commonly what you are experiencing is some slight swelling in your biceps muscle, causing it slip over a spot in the upper arm bone (humerus). Couple things you can do to help. Make sure you are always stretching well before and after weights, ice and Advil for any pain, and make sure you are not overtraining or using incoreect mechanics. It probably won't go away, but if it gets any worse you may need to back off the harder shoulder work and use less weight. It's pretty hard to prevent shoulder injuries b/c it is used so often for many different purposes. Good luck.

The best way to prevent shoulder injuries is to never NEVER use your arms in such a way that it will stress your shoulder. Never list push pull anything with your arms. Keep them straight at your side all day long every day and sleep only on your back or stomach. Do this and I can GUARANTEE you will never have a shoulder injury.

Easy, stop doin that! its only going to get worse, its not natural to do those kinds of weights, so stop it and ur shoulder pain will get better, vanity can be painful.

Make sure you're changing up your lifting routine and angles(every 3-4 weeks) as well as using dumbbells for your benching moves. On your shoulder presses avoid bringing the dumbbells together at the top. If using a barbell don't go behind your neck. Then with the lat pull downs again don't go behind the head. With all the shoulder movements if you go behind your head you put your joints at a risky angle which can lead to injuries.