Use leg to block a roundhouse kick

[Midnight-shadow]

You kick with your lower shin and/or instep, and you block with your upper shin or knee. It's pretty caking obvious which part is thicker. This is why you step up the kick with other strikes.
And no, whoever has the best reaction and strategy wins, not bone density.

Well, bone density, like all body conditioning will help. Muay Thai fighters don't spend hours upon hours kicking various hard objects just for the fun of it after all.

 

[KangTsai]

Well, bone density, like all body conditioning will help. Muay Thai fighters don't spend hours upon hours kicking various hard objects just for the fun of it after all.

Yeah, but average muay Thai fighyers still fail to check alot of the time, moving out of the way instead.