I decided to pin my bicep today for the first time. When I inserted the 1" needle about 1/2 way in, my bicep twitched, and contracted like I was flexing it even though I was relaxed. After about 5 seconds it stopped and relaxed. I aspirated and nothing came out. I injected a small amount and felt an odd stinging. I decided to abort and pulled the needle out, soon as it was out, the blood came running down my arm. It bleed steady for a minute or two. After applying pressure for awhile it stopped. Now it is a bit sore.
Anyone ever experience anything like this? I feel fine other that the sore spot in my bicep. I'm going to stick with glutes or quads from now on though...