Feeling dizzy while exercising is a common result of not eating enough, dehydration and improper breathing techniques, but it is not something that is considered normal or healthy. In some cases, the dizziness is a sign of a more serious issue, such as low blood sugar, high blood pressure, heart disease, or other underlying medical issues. Stop exercising immediately if you experience dizziness; you could lose your balance and fall if you don't.
If lightheadedness is a common experience for you, there are some things that you can try according to the cause of the condition:
Try cooling down from workouts more gradually if you experience low blood pressure toward the end of exercise. Slow from a run to a jog and then a brisk walk over 10 minutes, for example.
Drink fluids throughout the day to prevent dehydration, and drink small amounts of water or sports drink during exercise. Use sports drinks with 6 to 8 percent carbohydrate to rehydrate and replenish electrolytes, especially if you exercise intensely or for prolonged periods.
Try taking vitamin B12 and folate supplements to prevent anemia-related low-blood pressure.
Drink mint leaf infused water at least one hour prior to exercise. Mint leaves are a natural ingredient good for clearing sinus, which can help prevent lightheadedness during exercise.