what does it,mean when your knee locks
It means do not lock your knees especially if the weather is humid and hot outside because when you standing in parade rest or the position of attention and you lock your knees for a long period of time it can interfere with blood flow in your legs and knees causing you or someone else in your platoon to pass out.o keep at least one knee so slightly bent so blood will still flow. If you lock your knees, the blood doesn't flow through properly and you loose feelings in your legs and you fall down. Sit on the floor with your legs out in front of you. Reach for your toes. That's what locking your knees feels like.