Why do we need sleep?
Every night you switch off for hours, but your body and brain stay busy. Find out what happens while you sleep, why we dream and how much sleep children need.
Tanki explainsAges 6+4 min
5 questions
My Body
Your body is the most amazing machine you will ever own. It grows, it heals and it never stops working, even when you sleep. Let’s see what happens inside.
How does my heart work?
Your heart is a hard-working muscle about the size of your fist. Find out how it pumps blood around your body, what makes the lub dub sound and how to feel your pulse.
Ranki explainsAges 8+4 min
Why do we have bones?
Without bones you would flop like a jellyfish. Find out how your skeleton holds you up, keeps your brain and heart safe and works together with your muscles.
Tanki explainsAges 6+4 min
What happens to my food after I eat it?
Your lunch goes on a long, twisty journey through your body. Follow it from your mouth to your tummy and beyond, and see how your body takes out the good parts.
Ranki explainsAges 8+5 min
Why do we lose our baby teeth?
A wobbly tooth is a sign that you are growing up. Find out why baby teeth fall out, what pushes them and how to look after your new teeth.
Tanki explainsAges 6+4 min
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