I’ve been to yoga classes conducted by a colleague. He was a certified hatha yoga instructor.
Initially it was very hard for me to follow, because I had to slow down my breathing and move slowly. There were some yoga poses that were intimidating for me to do. The instructor was a male, and that made it more embarrassing.
As I went to more classes, I became more familiar with yoga and understand the principle behind the poses. I found yoga was quite enjoyable. However I still prefer other methods for relaxation.