A muscle "strain" is a minor muscle tear, which is what is causing his pain and weakness. I guess you didn't know that and couldn't understand what I was talking about in my original statement. There is no bruising because he didn't damage enough tissue (yet) which is a good thing. I'm not saying I'm right, he might train around it and be fine, nothing's ever a certain thing with the human body, except death. In my experience, good advice is precautionary, not careles.
youre pretty condescending in your posts, thats cool. if i stopped training for every minor injury or "strain" over the last 21 years ive been at this i would have taken off 6 months every year. training around injuries is part of the game. but i guess you couldnt understand that because you probably havent been a strength and conditioning coach who has worked with plenty of well known trainers and rehabilitation specialists who have taught you how to work through and around injuries. in my experience, knowing what youre talking about helps when you give out advice.