Hello, You had hot chips and coke after which you started having cold feeling and fainted. Fizzy drinks are not healthy. You should always prefer to take healthy food drinks, juice and soups over packaged drinks. Healthy drinks and beverage help your system to maintain a good electrolyte balance that prevents you from getting light headed, gives you energy and strength. Packaged drinks may rob your system of the essential minerals and cause you to feel dizzy or faint. Take adequate water and fluids. Avoid stress and anxiety. Caffeine present in the cola is likely to have an effect on the kidneys where it reduces the amount of potassium that is reabsorbed. Potassium and sodium depletion may trigger dizziness and fainting attacks. It n=may also affect the cardiovascular system causing irregular heartbeat, also known as arrhythmia. Coke contains other ingredients to give it a distinctive taste and preservative so that it is fresh but is detrimental for health. Avoid taking fizzy drinks. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Nupur K., General & Family Physician