Six Coffee Hacks Everyone should know



Scientists work tirelessly to uncover the mysteries of the natural world, from the reasons we binge eat to the best way to wash our hands. Now they’ve figured out why coffee served in white mugs tastes so bitter. Researchers found that the contrast between the color of coffee and a white mug makes the joe look and taste bolder (read: more bitter). By the same line of thinking, coffee served in clear glass mugs tastes sweeter.
So, yes, those lab rats (the people, not the animals) are obsessed with getting (and studying) that jolt of java. This recent study got us thinking: What other crazy things do we know about coffee thanks to science? Answer: a lot.

1. The optimal temperature to serve coffee

Researchers at the University of Texas were tired of brewing coffee, taking a sip, and burning off a layer of taste buds because the brew was scalding. So they got 300 test subjects to determine what temperature makes coffee drinkable but not mouth burning. Those brave test subjects found that the sweet spot is 136 degrees .

2. The best time to drink coffee

We’ve been conditioned to get our caffeine fix first thing in the morning (just take a look at the line out the door at your local Starbucks around 8 a.m.). But as Steven Miller, a psychology professor at Rosalind Franklin University, points out, early mornings are probably the worst time to drink a cup of coffee. If we pay attention to our circadian rhythms, specifically the points when our cortisol levels (the magical way we naturally feel alert) are low, we should drink coffee in the late morning (9:30 a.m. to 11:30 a.m.) and during the afternoon slump (1 p.m. to 5:00 p.m.) .

3. The coffee-ring effect

Spill coffee on your shirt and when it dries, it looks a little like a tree stump—light on the inside, dark around the edges. Scientists at the University of Pennsylvania spent more than a decade determining what causes those outer rings. The culprit: the shape of the particles. Round particles form a defined outer ring, while elongated ones do not .

4. A coffee a day keeps the ringing at bay

If we’re being technical, it’s four cups of coffee a day. A study tracked the incidence of tinnitus (a constant ringing in the ear) among 65,000 American women over the course of 18 years. Those who had one cup of coffee a day were 15 percent more likely to have tinnitus than those who had four or more .

5. Try a coffee nap

Coffee and naps don’t seem like a dynamic duo: One would think that the stimulative effects of coffee should stop you from being able to nap in the first place. But it turns out the boost of energy you get from a cup of coffee doesn’t happen in an instant. It takes upwards of 20 minutes for the caffeine to be absorbed by your body. Researchers at Longborough University found that drinking a cup of coffee and immediately lying down for a 15-minute nap kept tired drivers more alert than trying just coffee or a nap . We usually stick to a playlist with bumping beats to keep us awake on the road.

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