[quote][b]Posted by:[/b] keeno 111 I worked out majority of this year. I noticed got a bunch of stretch marks on my biceps and triceps, so I've pretty much stopped at this point in time. little freaked out. I'm looking to go back soon though.[/quote]Stretch marks happen. I got some on my back going through a growth spurt in middle school and they've never gone away (in college now). My brothers got some around their shoulders as well because they're body got big too fast, so I'm lucky that hasn't happened to me yet. Rather normal to my knowledge. Use some anti-stretch mark cream or something to the like. [Edited on 11.26.2012 10:28 AM PST]