I have had back problems again and again since my youth. Many of my friends recommended yoga to me, which I have tried a few times, but never really got excited about it.
Then I discovered Bikram Yoga. Actually, I only went there because it was so nice and warm there.
I enjoyed the warmth and also had no great demands on myself. After a couple of weeks I noticed increased flexibility. What I really didn't expect: my back improved sustainably by around 80%.
Then I had to interrupt my yoga practice again and at the moment I cannot practice Bikram yoga on a regular basis. My back never fell on the “pre-yoga stand” again (I used to crouch around for the first half hour in the morning).
It took a little patience, but every hour I attended was worth it. Thank you very much to the Bikram Yoga Team.