I took a yoga class for freshman year. I found out that not only is yoga actually fun to do to but it will leave you sleepy. We would stretch befor every session with soothing music that the video we were following played. I realy enjoyed that class. I hav not used my yoga mat since.
The instructor did not know anything about yoga either so it was learning experience for everyone involved. My body did feel better while doing it. I feel like those stretches really helped my back