Can any muay thai figther or trainer tell me the set of leg exercises that develop those big tights?

I%26#039;m looking for leg exercises to make them bigger but without loosing speed please help.|||One of the ways is to kick against the sand bags hard at least 120 times a day. This will develop and improve your reflex and toughness of your kick.|||ever noticed most soccer players (and weight lifters) have even bigger tighs?|||knee stretches put your knee up against a wall. Than raise it as high a s possible. Do every leg stretch you can think of. kick heavy things. Muay Thai kick boxers used to kick banana trees to make there thighs stronger and deaden their nerves.