I didn't even notice the hair, I was too distracted by the bloated face and stupid glasses. By "sonar" I'm guessing he means ultrasound. I'm no expert on the topic, but I'm fairly certain that ultrasound can measure density, which I suppose could then be used to differentiate between fat and muscle.  How he can claim to be be 85% muscle when he is at least 40% body fat is beyond me.