Chafing. Unless you are a size 00, you have probably experienced chafing. Heck, even if you are a 00, you might have some issues with it on your feet.
I've learned to cope with it by putting Body Glide in the areas I usually have problems. I try to avoid cotton because it holds in moisture. I wore a cotton shirt for my first half marathon in December on a foggy, wet day and I totally wished I hadn't come mile 7. The brace I wore for my IT band injury would rub my thigh raw from the Velcro and putting glide on it just made it slip down.
Wednesday, I went for a rare weekday outdoor morning run. It was drizzling when I started and just very wet. To psych myself up for it, I wore my BornFit running shirt I got as a premium for running the Annapolis Half. I love that shirt. It's soft and light. Also, I'm just proud of myself for earning the darn thing ;) Well, the run itself was sucky. It was the beginning of my cold, so I was slow and just didn't feel like running the 6 I was planning, so I did 5.
I got home and I had a lovely inch-long raw spot on my upper chest from the zipper on my top. My favorite shirt attacked me! I've run in this shirt before without incident. I've worn similarly-styled shirts without a problem, either. Heck, I wear necklaces that hit at that location and have never had so much as a dot of rawness.
Was it because my shirt didn't want to go running? Was my shirt upset that I woke it up at 5:30am? Did it not want to be out in the rain? Why would my favorite shirt attack me?!
I guess next time, I need to zip it all of the way up or put some glide on in that location before I run. :(