Dragging ass

Today seriously kicked my butt in Boot Camp.
I'm sitting here still exhausted.
It was one of those days where I didn't think I was going to make it. We were doing Suicide drills and at the end of each round I felt lightheaded and I had a stitch in my side and my limbs felt like cement. I couldn't imagine doing anything else at all.
I had a vision of waving the white flag, shouting "No Mas" and falling to the ground exhausted. I wanted to walk over to David and tell him "I can't do it. I can't make it today. I need to sit down and throw in the towel." My feet never took me over that way and I never said a word. I worked through the stitch and finished class.
Tomorrow has got to be better...