Ganja is a significant part of many Yoga traditions.
I have a good friend who was introduced to its use in this context.
The lineage he was exposed to uses the enhanced attention in very specific way. No yoga teacher or class I’ve ever experienced has ever hinted to these techniques which makes me think they are not known outside of this lineage.
With that being said, one can always explore yoga practice in the presence of sativas, with attention toward the body and slowing down everything.
A typical augmented yoga session is 6+ hours.