I woke up with a tiny headache this morning. I had a bit of an upset stomach too. I went to the gym & walked a while. I went to do physical training (p.t.) with my squadron. Did the warm-up thinking this wasn't good...Did 25 push-ups & started to do crunches & BAM. Felt like I had been kicked in the head & sucker punched in the gut. Went to take my shower & get dressed. I sat in my office in the dark the rest of the day.