Well, if you're still having problems with the lower half of judgement, I'd like to suggest that you find a good picture of Arnold Schwarzenegger, like this one.
It's cliched to look at Arnie as an example, I know, but the fact remains that every muscle is very pronounced, so it's easy to draw a similar build on your characters, and I'm not to proud to use him as a basis if I have to.
Yes, I know. The gay jokes will start in 5, 4, 3, 2...