Okay, so holding a pose for 5 min.s is no easy feat. I can only stay in Trikonasana for about 2 1/2 minutes. It's not the leg strength or knees locking or holding the torso parallel to the floor. My neck can't take it. At about 1 1/2 minutes it gets very tight and even if I look forwards or down it continues to tighten until I have to stop. I tried the legs wider so I could touch the floor and I tried a block. No difference. What's that all about? (Actually, my left back shoulder has been giving me trouble for about 13 months and 2 weeks...hmm, that's the same age as a certain baby...)
It's interesting what you learn as you hold a pose for awhile. I'm so used to 5 breaths and then up, or just a demo in class, that I haven't been in a position (ha) to observe what is going on in my body for some time. So this is a good exercise to see what is up. And work on it.
How did you do?
(Next post, the modifications)