Staying tight and low and NOT tensing up muscles.

[Libersolis****]

I definitely tense up quite often on everything. For example, say I am doing an armbar from guard and the instructor comes around and tells me to close the space and pinch my knees I have a tendency to really SQUEEZE my knees together, and burn out my legs. Is doing such a movement as simple as just putting my knees closer together with no extra energy or force?

 

[blink_man182]

Only time my muscles tense up, is when we practice

When the guy on the ground has your leg and you get low and grab your ankle and roll into a triangle (gets me every time for some reason with tense muscles)

 

[Deloitte]

Having a hard time understanding this thread.