Is it normal that i get distracted by men when watching porn?

Sometimes if the guy has a good physique I do end up thinking, "hm, I wonder if I could get a body like that" or when they look ridiculously muscular "I wonder how many steroids that guy takes?". If you go limp it obviously doesn't arouse you, so darren3 claiming it's gay is dumb.

Think of it like this. Girls always say how pretty other girls are in fashion mags, or say things like "I wish I had her body" or "she's got really nice legs" or "She has great skin". It's not that they are declaring some homosexual attraction, just comparing themselves and appreciating someone else's appearance. Since bodybuilding is your thing now, it makes sense to be looking at other guys' bodies and comparing them to your own.

Maybe girl on girl could do the trick.

It could be because of your recent interest in bodybuilding.
You said you got distracted by their muscles and definition, you could just be imagining what you yourself want to look like as the outcome of your bodybuilding.
You're not gay, just interested. :]

It's... Hard to explain... I have no idea.

You need to watch porn with prettier girls or uglier guys. And the third option suggests you may be a double agent. Lol

Just face it. Your gay.