Darkness is hitting my Utthita Hasta Padangusthasana

After six o'clock in the morning there is no light at all when I leave the house, and our little but beautiful shala is almost equally dark with just a couple of little lamps and candles. It is very cozy and warm, but my Utthita Hasta Padangusthasana is suffering again. The Teacher says it is physiologic, no light, no balance. I don't know if I can do anything about it, except to turn on the big lights (and make everybody mad?!) or go to the corridor for that asana. What do you guys do?

Sunday I went to a jin-yoga class. Very relaxing and usefull. Like little pampering in the tough world of ashtanga.