Ok fine, time to take you to school.
First of all he weighed in at 263lbs with timberland boots and jeans on. Get your fucking facts right or stop talking. Second, he looks huge because, he's NOT cutting any water weight. He walks around at whatever he weighs in at.
Example A -
How much you think he weighs? 155lbs. He must roid too right?
B)
170lbs. Shredded so he must do roids.
C)
Oh another 170lb'er. Must be another roider he's ripped!
Since we are talking about HW's:
The last one is Cheick Kongo, what do you think he weighs? It's only 240lbs.
I could keep going, but all you need to do is look at ANY fighter on weigh in day, but I'll leave it with one of the best (or worst) examples, Phil Davis, dude looks 100% gross cutting down to 205lbs -
I'll present the math to you one last time, I can only ask you read it, I can't make you understand it.
When fighters "cut" weight, they cut 10-12% total body weight. For 205lb'ers that means typically 20-30lbs, more in extreme cases. I didn't follow how hard his cut was at 205, but lets just say it was 25lbs. That means he typically walked around at 230lbs. Fighters aren't stupid either. They know they have to cut weight and won't allow their "walking around" weight to get that above normal, because the bigger the cut the less stamina you have, it's just harder on the body. So Overeem, knowing he had to cut 30ish pounds limited himself to a weigh so he could make a reasonable cut. When he decided to ditch the limit and goto HW, he grew into his massive 6'-5" frame and put on a lot of pounds. He did it over YEARS, and only added 30lbs. This isn't hard to do, why you think so is beyond me.
You seem to think everyone in MMA does roids, well they actually don't. They pass the tests and continue to fight. In the UFC if you do get caught cheating multiple times, you don't fight in that orginization anymore, ala Josh Barnett.
I'm sorry it was hard for YOU to put on muscle mass on a part time basis. But you aren't the measuring stick here.
Until fighters piss dirty I give them the benefit of the doubt, and Overeem hasn't gone from 205 to 260 overnight. Did I miss anything?
Also keep stealth editing your posts, you just can't believe others can gain muscle mass because you CAN'T, thus everyone roids. Got it.