@rooeytoo: I took a ten-session class and between a really needy teacher, who did a lot of audible whining and moaning and describing his life miseries and the few really needy female students, there wasn’t much air to breathe.
And he talked too soon and too much about the magical energy centers, learning about which he said was much more important than the postures, which he treated as almost a side interest.
The initial stance he wanted us to take hurt my knees, which were ten years younger than they are today.
OTOH, I took a wonderful mind-body course which taught very useful things about the breath, relaxation techniques and safe yoga stretches. Those I use regularly. While waiting in the Doc’s antechamber,for example, instead of reading magazines, I use the diaphragmatic breathing to lower my b/p.