Sure, everyone loves a delicious, warm cup of joe in the morning. But, just exactly how much caffeine are you consuming? Here’s your guide to the caffeinated beverages at Starbucks. Too much caffeine can lead to: Insomnia Nervousness Restlessness Irritability Stomach upset Fast heartbeat Muscle tremors Source: energyfiend.com Beverage Short Tall Grande Venti Trenta Brewed […]