I'm dying

Please remind me never to do this again.  For some reason, I thought I wanted to climb stairs for my cardio today.  I did five minutes this morning before work and I almost died.  As if that weren't enough, I thought it would be a good idea to do five more minutes in the stairwell at work during my afternoon break and follow that up with ten minutes of straight walking.  What an idiot I am!  I normally don't sweat a lot; I just never have, even during exercise.  After my 15-minute cardio session today, though, I was sweating like a pig.  I don't know if it is my extra weight or all the water I've been drinking that is making the difference.  I was also breathing so heavily that my throat hurt and I almost couldn't catch my breath.  I got so hot I wanted to strip all my clothes off, which I obviously couldn't do at work :-).  I need to save stair climbing for Saturday mornings at home!