Coffee is useless if you're too tired

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Coffee Is Useless If You're Too Tired

By Amanda Kabbabe and Keleigh Nealon, Buzz60

Your morning cup of joe may not actually be the solution to a sleepless night.

New studies about caffeine are finding it doesn't actually work as well as many believe.

SEE ALSO: Can coffee cause cancer? Only if it's very hot, say WHO scientists

Though two cups of coffee per day can boost performance and alertness, it's nothing compared to a good night's sleep.

Instead, it may be more useful to stay hydrated and well-nourished after a night of tossing and turning.

RELATED: Coffee and espresso drinks explained

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Coffee and espresso drinks explained
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Coffee and espresso drinks explained

A latte is espresso and steamed milk with a small amount of milk foam on top.

(Photo by Derek Davis/Portland Press Herald via Getty Images)

A cappuccino should be equal parts espresso, steamed milk, and milk foam. 

(Photo by Florian Gaertner/Photothek via Getty Images)

dry cappuccino features less of the traditional steamed milk and more milk foam in its place.

(Photo by Etienne Voss via Getty Images)

cafe au lait is traditional black coffee mixed with warmed milk.

(Photo by Waring Abbott/Getty Images)

Espresso is specially brewed coffee, created with finely ground coffee beans brewed under pressure with nearly-boiling water. 

(Photo by Jeremy Piper/Bloomberg via Getty Images)

macchiato, traditionally, is a 'stained' espresso -- espresso with just a dot of milk.

(Photo by Nigel Noyes via Getty Images)

An Americano is espresso mixed with hot water. 

(Photo by Ben Monk via Getty Images)

cortado is espresso that is 'cut' with an equal amount of milk. 

(Photo by Anthony Collins via Getty Images)

red eye is for the severely under-caffeinated -- espresso shots mixed in with a regular black coffee

(Photo by Dima Sobko via Shutterstock)

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Scientists involved with the caffeine research are saying after three nights of restricted sleep, caffeine loses its effect. The study specifically looked at those who got five hours or less of sleep.

They came to this conclusion by testing a group of people using caffeine and a placebo and conducting a series of tests on their moods and thinking ability.

So while you've made fresh coffee a part of your morning routine, it may not be doing much more than emptying your wallet.

RELATED: Price of coffee at 10 fast-food chains

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Price of coffee at 10 fast food places
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Price of coffee at 10 fast food places

Wendy's

Hot coffee (regular or decaf), regular: $0.99

McDonald's

McCafe premium roast coffee, small: $1.00

Burger King

Smooth roast coffee, small: $1.00

Krispy Kreme

Coffee (smooth, rich, or decaf), small: $1.59

Dunkin' Donuts

Hot coffee, small: $1.59

Tim Hortons

Coffee (original blend, dark roast or decaf): $1.59

Caribou Coffee

Coffee of the day, small: $1.69

Panera Bread

Hot coffee, small: $1.89

Starbucks

Freshly brewed coffee, tall: $1.85

Bruegger's Bagels 

House blend coffee, small: $1.99

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