Last Thursday my back took a turn for the worse. I tightened up very badly and spent the entire day in excruciating pain. I could hardly stand, or sit, or lie down, and I collapse several times. I skipped class on Friday because I didn't want to get out of bed, and had to have an emergency chiropractic appointment. I had a massage yesterday and am feeling somewhat better, and have another chiropractic adjustment today. I have no idea how much longer I will be out for. I am not a happy camper - I want to train.