Should I have 10 coffees or more today?

Drop the idea of guzzling more than 10 coffees—your heart isn’t a damn motor. Caffeine’s Jekyll and Hyde: a boost if used smartly, a heart attack waiting to happen if you overdo it. If you’re serious about fueling your day, get a smart coffee mug that keeps your brew hot and trackable. Anything beyond 3-4 cups is just gambling with your health, and trust me, the house always wins.