Harry Styles 'MMA' Workout Goes Viral: 'It Left Me On My Back'

Earlier this month, pop sensation Harry Styles turned heads when he showed off his physical fitness by casually running the Tokyo Marathon with a quite impressive time. Now, his MMA-inspired gym routine is going viral.

This week, fitness writer Harry Bullmore of The Independent decided to try out one of the former One Direction member's workouts after speaking with one of his former trainers.

It did not exactly go great for Bullmore.

Ahead of his Love on Tour shows in 2021, Styles trained with Thibo David of Executive Peak Performance where David put the pop star through 20-minute conditioning circuits that were inspired by David’s background in MMA.

“For the conditioning workouts, we would do three or four rounds of four minutes with minimal time in between,” David told Bullmore of The Independent. “I take that from fighting conditioning. Fighters train like this to get ready for the five-minute rounds in MMA. I’ve found this to be a very good way of building VO2 max [the maximum amount of oxygen your body can take in and use during exercise].”

As Bullmore explains, the workout consists of four rounds of an intense circuit of exercises designed to work out the entire body with no rest in between the exercises.

Bullmore tried the workout and shared it in a post on Instagram.

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Obviously, Bullmore had a hard time with it, and he wrote about how he was feeling as he completed the last set.

"My muscles feel like they’ve been sapped of all strength, keeping my breathing steady requires conscious effort and my Celtic genes mean my face now resembles a perfectly ripe tomato. However, I manage it, then allow myself to collapse and recuperate," Bullmore wrote.

He went on to say that the workout "isn’t one for beginners," calling it "one of the hardest celebrity sessions I’ve tried."

So clearly, Styles is in pretty good shape.