It thus becomes quite impossible to believe in any theory that speaks of "boosting" power in modern times, simply because there has been no such boost . Here's a blow-up graph of the so-called "steroid era", starting at 1982 (because 1981 was strike-shortened and thus not a good data point). Understand that in this graph nothing has been "spliced out" save the single ball juicing of 1993/1994 (whether 1993 was or was not post-juicing is still debated); the numbers on the left would change were earlier splicings and wartime smoothings dropped, but the shape and scale of the graph would be unchanged.
“There’s been a lot of talk about fighting, but never has anything significant been proposed. It’s all rumor and talks. If I go up in weight class, I need time to gain weight and adjust myself for that challenge. At that time, I was very busy. I had challenge after challenge. I was fighting all these guys at 170 that were challenging me one after the other. So if I do something, I want to focus on it and do it well. That’s why I’ve been preparing myself for more than six months to fight Bisping. And I put on some weight, and I feel good now, it feels natural, and I’m ready to go.”