7 signs your body could be sensitive to coffee

You Can Literally Feel Your Heart Pounding In Your Chest

If you're suddenly wildly aware of your heart pounding away after drinking a cup of coffee, there's a good chance you're sensitive to caffeine. "Caffeine sensitive individuals may experience palpitations which presents as racing of the heart or an irregular heart beat," says Gaffney. "It can exacerbate abnormal heart rhythms such as atrial fibrillation (A-fib) or tachycardias (abnormally fast heart rhythms). This can be accompanied by a rise in blood pressure, which is also a result of caffeine sensitivity."