Only if that was true...
But seriously, its no where near to burn 4000 calories.
3500cal = 1 pound of solid fat.
If 4 hours of muay thai could actaully do that then that would be a cure for obesity.
Think of it this way, running 10k burns around 700cal. Jumping rope for 22mins burns 240 cal..
I know I'm really off-topic, but I think that's the first time I've seen BJJ Boy give a comment that wasn't redundant. :P
(No offense, bro, just saying)
@sfitzen: I believe Rich Franklin started working out to training videos at the age of 24. All you have to do is train harder than the other guys...lol. Good luck, bro.