Can I imagine Krichnamacharya sipping chai while teaching or practicing yoga? NO
Can I imagine B.K.S. Iyengar practicing yoga and drinking at the same time? LOL
I never saw a cup of tea or a beer next to P. Jois on the many pictures I've seen him.
Sometimes newcomers think they won't survive a yoga class if they don't drink.
I promise, they will survive.
It's not necessary to bring your own.
Drinking interrupts the own practice, it disturbs the others.
I even know yoga teachers who sip tea during classes. They need refills and whatever.
Yet multi-tasking is not the goal in yoga, but focus. Teachers are role models, they influence the atmosphere in a class. Teaching should be enough challenge. It is.
If it happens that yoga teachers sip tea during a yoga class the class becomes a tea party, but only few are allowed to drink. Hahaha.....
No drinking, no eating, no phone calls, no smoking during a yoga class.
Oh, how strict I am today. Hahaha.....and I would so love to smoke a Gaulloise blonde before urdhva dhanurasana.