Is it very hard to inject into a vein by accident?I mean for years doing oil based steroids i never aspirated in the glutes or quads and that was hundreds of shots with no problems.Now im about to syntherol up my bis and im scared shitless of injecting into a vein because aspirating with one hand is difficult because the pin moves around abit,am i just being way to worried about nothing or is this a big concern.I talk to alot of guys that said they never aspirated when they were younger because they did not know about it.Can the oil leak into a vein that you puncture on the way in?are there alot of veins in the upper arm?Please help,thanks guys.