An aerobic exercise is so much more intense than my normal morning walks.  And while it does cause me to sweat a lot more, it does not increase my heart rate as much and I find that interesting.  

I woke up not feeling great; I had trouble sleeping through the chaotic weather, especially the hail that hit around 1 or 2.  I did manage to get in my daily exercise, but I felt like I was starting to get a migraine, so I decided to just chill out for the rest of the day.  I never did develop a full migraine, but I did feel like a lump all day.  Some days are just like that.