What can I do to feel my best during my workout?

I run on a treadmill for my workout…

Some days when I workout, I feel fantastic and I sweat like crazy but I feel like I could run forever. Other days, I get sharp pains in my abdomen (cramps), a dry sore throat, dizziness, and I feel like I’m going to die!!

What can I do to make sure that I will not have cramps or dizziness during my workout?