Okay, so just a helpful tip for those who are doing dips: Make sure you are doing them in a slow and controlled manner. Doing dips quickly increases the risk of tearing or hurting your rotator cuff(s).
Which brings up another important truism of the gym: if you're going to workout, don't lift more than you should, make sure your form is sound, and make sure that your movements are controlled. There is nothing worse than having to stop working out because you hurt yourself.
The most important thing in the gym is to protect your back, shoulders, and your knees.