Is Coffee A stimulant?

Caffeine is a central nervous system stimulant and the most commonly consumed legal, psychoactive substance. It has a wide range of effects of most people and is considered safe in limited amounts.

uhs.princeton.edu - Caffeine - Princeton University Health Services

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Caffeine is a central nervous system stimulant and the most commonly consumed legal, psychoactive substance. It has a wide range of effects of most people and is considered safe in limited amounts.

Learn more about:

Effects of caffeine

Caffeine takes about an hour to take affect (less on an empty stomach), and can lasts 4-6 hours. The actual effects of caffeine depend on a number of factors, including:

genetics;

body weight;

medications being taken;

health conditions; and

amount of regular consumption.

Short term effects

Because caffeine is a stimulant, it is common to experience:

increased alertness

increased blood pressure

increased breathing rate

increased urination

These effects are mostly due to caffeine increasing your metabolic rate (though it has not been linked to weight loss). Caffeine is also a diuretic, which causes increased urination, and may lead to dehydration.

Long-term effects

Long-term use can lead to:

nervousness

insomnia

dehydration

stomach irritation

fatigue

Caffeine content

The amount of caffeine in a drink depends on the size and the chemical components. Here is a list of common drinks, their size and caffeine content: Beverages Serving size (oz) Caffeine amount (mg) Brewed coffee 8 80-115 Espresso 2 80 Cappuccino 8 80 Iced tea 8 30 Chocolate milk 8 5 Hot cocoa 8 6 Cola drinks 12 38-46 Jolt 12 70

Signs for Concern

Moderate caffeine use (400 milligrams or 4 cups a day) is considered safe for healthy adults. However, you may want to take a look at your intake if you experience any of these negative side effects:

nervous, dizzy, or irritable

gastrointestinal aches

frequent urination

headaches

muscle tremors

difficulty falling asleep

Tips for Moderating Use

If you drink two or more cups of a caffeinated drink each day, you will most likely experience withdrawal if you stop drinking it completely. The most common symptom of caffeine withdrawal is a headache, but you may also experience more severe effects, such as anxiety, fatigue, and depression. If you want to eliminate caffeine from your diet, it is best to reduce intake gradually.

Some other tips for reducing caffeine use are to:

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What tea is best for belly fat?

Oolong Tea Like green tea, it's a rich source of catechins. In one study, more than two-thirds of overweight people who drank oolong tea every day for six weeks lost more than 2 pounds and trimmed belly fat.

webmd.com - Could Tea Help You Lose Weight? - WebMD

People around the world drink tea. Hundreds of varieties exist, from white to black and green to oolong. They all naturally have high amounts of health-promoting substances called flavonoids. So they’re thought to bring down inflammation and help protect against conditions like heart disease and diabetes.

But can tea help you lose weight?

A cup of this herbal brew each day isn't likely to get you back into your skinny jeans. But some research suggests tea may help you lose a very small amount of weight when you pair it with a sensible diet and exercise. And consider this: If you swap out your morning mocha latte for a cup of tea with lemon, you'll trim almost 300 calories from your daily total. Teas have a type of flavonoid called catechins that may boost metabolism and help your body break down fats more quickly. And the caffeine in many teas increases your energy use, causing your body to burn more calories. These two compounds probably work best together for any weight loss that may occur.

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