On a Saturday almost two years ago, the evening after a morning spent in a hard
karate workout, I took DXM and was unusually active. Monday, I went to full-contact karate and got kicked in the back fairly hard. The only real pain I felt, though, was a horrible headache that had been present since I'd woken up Sunday morning. By Tuesday, the headache had mostly dissipated; I went outside and played Frisbee. The Frisbee went into a shrub (stinging nettle?).