For me they come in bunches. About a month ago I hurt my toe coming down from a handstand in a cramped space, and hitting it on a hard part of the couch. The toe is all better now, but a couple weeks ago I strained an intercostal muscle (one of the muscles on the chest that controls expansion of the rib cage. At first when I injured it I thought I tore my pec, so I rushed to the bathroom to have a look at it in the mirror. I expected to see some nasty sight like this:
Torn Pectoral Muscle
I was relieved to see my ordinay pecs starring back at me. I'm pretty sure I hurt the intercostal because I had been focusing on upper body work due to my toe injury.
For those of us addicted to exercise it is tempting to work around injuries. I think that is fine so long as you don't take the extra time that would have been spent on the injured area and use it to increase focus on the healthy parts. This is not the first time that I doubled my injuries by putting 100% of my focus on a few bodyparts, and I'm guessing others might find the same thing.
How do you guys deal with injury, does it depress you, do you appreciate the break?