The knee is NOT a hinge. It can twist and slide. 

The shin bone / tibia ends rather flat, while the thigh bone / femur meets this flat top with two convex round bony ends. There is no connection or stability inherent in the joint or skeletal structure of the knee. All restrictions to this joint, ma...

Anyone who has experimented with rolling the sole of the foot knows the results.
The foot feels more loose and forward bends are less restricted.

The reason for this miraculous trick is often assumed to be lengthening of the fascia tissues under the foot. Namely the Plantar Fascia.
However, this piece...

This video features a short explanation of two perspectives on drinking water during yoga practice.
Drinking water during yoga practice is an at times hotly debated topic. Many people suggest a traditional reason why not to drink water, others cite government health guidelines.
Among the many argumen...