: The old cliché says it's good to stop and smell the roses. If you believe a series of viral videos, you may appreciate them more if you grew up in the US.

Billions of bacteria, fungi and viruses live on the surface of our bodies. We are only just beginning to understand the vital role they play in our health and wellbeing.

Sometimes our bodies react to the world around us before we realise, shaping our emotions.

There is growing evidence that the time of day we exercise makes a difference to our performance and health, but can we train our bodies to peak at different times of the day?

Human brains are bigger than those of our primate relatives, but evidence from extinct human ancestors suggests brain size isn't everything.

Eating large meals can bring about changes that make us hungrier – but it’s not because your stomach “stretches”.

Our voices are not immune to the effects of ageing. But there are some things that can help to keep them in good condition.

Some physiques perform better in different climates - just like animals, a study of athletes suggests.