W hen we age, our scrapes don’t heal as quickly, our movements elicit grunts, our twinges persist longer than they used to.

The human body is made up of cells, which make up tissues, which in turn make up organs that form the basis of systems, all working together to keep us alive. Learn how body systems and their vital ...

and tissues enables the immune system to defend the body from pathogens. A fully functional immune system can distinguish healthy tissue from unwanted substances. If it detects an unwanted ...

‘Health’ is defined as keeping your body ‘working at its best’. A park scene shows us many different activities suitable for people of different ages and abilities. Pupils could be ...

Your body clock regulates hormones that impact mood, metabolism, and sleep. Learn how to align your lifestyle with your ...

‘Health’ is defined as keeping your body ‘working at its best’. A park scene shows us many different activities suitable for people of different ages and abilities. Pupils could be ...

The digestive system is the series of tubelike organs that convert our meals into body fuel. There are about 30 feet (9 meters) of these convoluted pipeworks, starting with the mouth and ending ...