Coffee grind size and consistency matter. We tested a bunch of coffee grinders to find those capable of crafting the perfect ...

Here are a few ways to really maximize your coffee nap. Caffeine takes about 20 minutes to hit your system — right around the time your nap is ending, so you wake up with a double shot of energy.

Until about lunch time, the coffee goes pretty fast in our office. Only a few of us drink it well into the afternoon, though, and it’s anyone’s guess how long the coffee’s been sitting ...