Webup to 400 milligrams of caffeine a day is considered safe for most adults.

If you rely on caffeine to wake you.

Webdrinking two to three cups of coffee or up to three cups of tea a day was the sweet spot, the researchers found.

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People who consumed about 200 to 300 milligrams.

Webcaffeine has its perks, but it can pose problems too.

Compared with nonconsumers or consumers of less than.

Read on to learn more.

A morning cup of coffee may do more than just perk you up, according to new research.

Moderate amounts of caffeine intake — defined as one to three cups of.

If you're bothered by headaches,.

Find out how much is too much and if you need to curb your consumption.

However, people's sensitivity to caffeine varies.

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