That's not a good sign. The cramping is probably from a lack of potassium and water. Make sure that you eat a banana and keep hydrated before and after you work out. If you eat before the work out, allow at least 30 minutes. I know they say 45 minutes, but if it's only a banana it'll process and settle in less time than a 3-course meal.
It doesn't matter if you agree or disagree
... As long as I don't bore you and I spark a moment of thought, my goal is achieved
Queng leon queng tigre ecu tacacut, queca pa? - Pampangan Mandarigma Motto