I have just been diagosed with prediabetes with a fasting blood test of 100 mg/dl. I usually get dizzy after I exercise. I usually eat a piece of fruit before exercise. Should I eat a protein and a carb before exercise to alleviate dizziness? Cardiac disease has been ruled out since I had a doppler test. Also, no cholesterol was detected in my carotid arteries by the technician, and my EKG and blood pressure is normal.