Just because an art like Muay thai for example has been refined due to its competitors trying to be the best doesnt make its techniques any weaker or more unrealistic for the street. I take learning a proper right cross proper knee strike any day over learning a 'death touch'. A proper punch, proper kick, proper elbow, proper knee can always be aimed at the groin or eyes anyway. Sparring IS required to become efficient in these techniques. You cant spend most of your training doing breathing exercises, punching the air in slow motion, and thinking youll just be able to use a weapon to kill the guy youre fighting... and expect to be able to handle yourself in a fight
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