Luke Barnatt argues cardio is what separates winners from losers in fighting. After 15-20 years competing, he's outlasted stronger and faster opponents simply because they gassed out. Without it, strength and speed don't matter.
Cardio is king. Number one, because it doesn't matter how strong you are, if you get tired, you're done. All of the knowledge I have in fighting now, like I've been doing it for 20 years or 15, 17, whatever, long time. I know a lot about fighting. A lot. I'll gas in 2 minutes. I'm useless. I'm literally useless. If you get tired, you're useless. So I beat a lot of guys that were stronger than me, that were faster than me, because my cardio was— you just never get tired. They get tired of punching you in the head. They literally give up and you knock them out.
"I Haven't Worked in 10 Years" - How Rob Lipsett Built a £1M Fitness Empire From Nothing
