In the high-stakes world of MMA, even the most elite fighters can fall victim to overtraining—and according to legendary flyweight Demetrious Johnson, that's exactly what happened to Khamzat Chimaev ahead of UFC 328.

Chimaev (15-1 MMA, 9-1 UFC) suffered a stunning split-decision loss to Sean Strickland (31-7 MMA, 18-7 UFC) in Saturday's main event at Prudential Center in Newark, N.J. The pivotal fifth round proved decisive, with two judges scoring it for Strickland and handing "Borz" his first UFC defeat.

The setback has sparked intense debate among fans and analysts alike. For his second consecutive camp, Chimaev opted for an unconventional training approach, doing his strength and conditioning work in a garage under coach Sam Calavitta. While his cardio held up impressively through five rounds against Dricus Du Plessis at UFC 319, things looked very different against Strickland. By Round 2, Chimaev was already slowing down, and after a failed takedown attempt, he was forced to pull guard—a rare sight for the usually dominant wrestler.

Johnson, a former UFC and current ONE Championship superstar, didn't hold back his analysis on his YouTube channel. "In my personal opinion, I think he trains too hard," Johnson said. "There's a point in time where when you're in shape, your cardio threshold can only go so high. So if you're already in shape, you can't go any further. Physically, it's impossible. The only thing you're going to get is diminishing returns."

The MMA icon elaborated on the dangers of pushing past the point of usefulness. "If I spend all day sparring, drilling, all that stuff and then I go and kill my body in the garage and then I go and do this, you're just breaking your body down. By the time you get to the fight, your body has been through hell for eight to 10 weeks. That used to be the norm back in the day, but now in 2026, there's way too much science. We've seen that less is more and more is less."

Johnson, known for his own impeccable conditioning and longevity in the sport, offered a simple piece of advice: "I love when I see people work hard, but sometimes working too hard doesn't pay off. You're better off taking two days off and just chilling and relaxing."

Others in the MMA community, including commentator Joe Rogan, have pointed to Chimaev's drastic weight cut as a potential culprit. Rogan theorized that Chimaev had been bulking up for a move to light heavyweight, but after Strickland finished Anthony Hernandez in February, Chimaev opted to defend his middleweight title instead—potentially leaving him drained from the extra weight he had to shed.

For fighters and fans alike, this serves as a powerful reminder: in a sport where every ounce of energy counts, sometimes the best training strategy is knowing when to rest.