i took test 400 only in the ass...and that stuff killed me....i couldnt walk...and there was a huge welt.....but i recently started doin spot injections..and it works great for the muscles that were weaker....now they're gettin bigger.......but i dunno if i can take a test 400 shot in my bicep....im thinkin its gonna probably welt up and hurt like a mutha..and also, since i just started doing spot injections like the arms and shoulder....ive been hearing that there are some bad side effects...like big scar tissue...or weird looking bulges coming out of the shot site.....bros i appreciate your responses