Coffee has been the subject of many studies. Some say it has negative effects on health, others claim it has benefits. A recent meta-analysis looked at a range of results, and is making some clear claims.
There are many reasons a person may suffer bouts of shaking or cramps, though hydration and rest can often alleviate the affliction. Uncontrollable shaking is not necessarily a sign of serious illness, but it can be.
Some people claim they only need four to five hours of sleep a night. After that, these super-humans say, they wake up nice and refreshed, ready for the challenges of a new day! From a health standpoint, that's bogus.
For the Guarana growers of the Amazon, the caffeine-rich berries aren't just a fortifying brew but part of ancient tradition that respects their rainforest home.
Khat is a thriving business in Ethiopia. The country is the world's biggest exporter for the amphetamine-like leaf. Despite health risks, trade is so lucrative that it is unlikely to slow down any time soon.
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