Many factors can cause a person to feel light-headed while exercising. Inadequate nutrition, improper workout techniques and dehydration are a few common causes, according to Health Services at Columbia University. Experiencing light-headedness during exercise also may be a symptom of an underlying medical condition. Therefore, it is important to consult a physician if you consistently feel dizzy or faint during workouts.
Causes and Symptoms
MedlinePlus notes that light-headedness can occur when the brain does not receive enough blood. Minor and serious illnesses, such as colds, allergies, hypotension and heart disease, also can cause this feeling. Individuals with light-headedness may experience a spinning sensation, loss of balance, vision changes and heart racing. Sudden movements can exacerbate symptoms, which either develop suddenly or build gradually.
Dehydration
Dehydration occurs when you do not replace the water that your body loses throughout the day. Excessive sweating generally takes place during exercise, and anyone who exercises is at risk of becoming dehydrated, according to MayoClinic.com. MedlinePlus notes that dehydration causes dizziness; therefore, it is important to drink plenty of fluids before and during physical activity. Drink at least 16 oz. of water two hours before working out and at least 4 oz. of water after every 15 minutes of exercise.
Eating and Exercise
The foods you eat and the times that you eat them directly impact how you feel while exercising. Inadequate nutrition can make you feel sluggish during workouts and also can cause your blood sugar levels to drop, which can cause dizziness during workouts. Eat a small, nutritious snack at least one hour before exercising to boost your energy. Consume large meals at least four hours before working out and always include healthy carbohydrates and proteins in your meals for enhanced energy.
Overexertion
Start off slowly and increase the intensity of your exercises gradually to prevent light-headedness. When you overexert the body during exercise, your system cannot keep up with how quickly your body is burning oxygen, which generally leads to heavy breathing, nausea and light-headedness. Work out at an intensity that your body can handle and take breaks when necessary to prevent dizziness.
References
- Health Services At Columbia: Dizzy After Exercise
- Medline Plus: Dizziness
- MayoClinic.com; Dehydration Risk Factors; Jan. 7, 2011
- MayoClinic.com; Eating and Exercise -- 5 Tips To Maximize Your Workouts; Dec. 18, 2010
- Building Muscle Fast Naturally; Feeling Light-Headed After Workouts; Pete Owen; Nov. 7, 2008
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