They're not running and sprinting for 90 minutes though. They're walking or jogging the majority of the time. Ronaldo is incredibly athletic, but he's not representative of soccer as a whole.View attachment 309661 View attachment 309663
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How many a level athletes can run and sprint for 90 plus minutes and be able to jump that high for a header? Majority of American football players wouldn’t even last 25 minutes.
Cardio, endurance and technique is the more important for mma than strength and size.
If I had to take my chances lasting 90 mins in a football game or 25 in an MMA fight, the choice would not even be an easy one, it would be the simplest choice ever made.