Too much caffeine can kill you. Plus, sleep and daylight saving; bird flu rising; cortisol and collagen

Plus, a big reason to get tidy, where headaches come from, timely sleep tips, and why some men use horny goat weed.

National Geographic

This is an email sent by National Geographic. All copyrights and trademarks remain the property of their respective owners. Email Inspire is not affiliated with National Geographic.

Email from National Geographic. ‘Hangxiety’: How alcohol + a hangover can increase anxiety

‘Hangxiety’: How alcohol + a hangover can increase anxiety

Email from National Geographic. How does this impact you?

How does this impact you?

Email from National Geographic. Sex, 38 million years ago; Plus, the deadliest mushroom is spreading; what doomed Joan of Arc?

Sex, 38 million years ago; Plus, the deadliest mushroom is spreading; what doomed Joan of Arc?

Email from National Geographic. They could not erase this queen; where vampires are born; is this photo doctored?

They could not erase this queen; where vampires are born; is this photo doctored?

Email from National Geographic. How the Maya's secrets were revealed. Plus, an explosive energy discovery; a Stoic's rebound

How the Maya's secrets were revealed. Plus, an explosive energy discovery; a Stoic's rebound

Email from National Geographic. The surprising place where headaches come from. Plus, the ‘Countess of Computers’; the Great Manhattan rip-off

The surprising place where headaches come from. Plus, the ‘Countess of Computers’; the Great Manhattan rip-off

Email from National Geographic. This virulent form of bird flu is spreading from pole to pole. Plus, men and horny goat weed.

This virulent form of bird flu is spreading from pole to pole. Plus, men and horny goat weed.

Email from National Geographic. 4 reusable kitchen alternatives you'll use every day

4 reusable kitchen alternatives you'll use every day

View more emails from National Geographic

National Geographic