Why Do We Do That? Series 1 Episodes Available now
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![](https://ichef.bbci.co.uk/images/ic/320x180/p0d9ccz7.jpg)
10. Why do we doomscroll?
Endlessly scrolling negative news? Why are we drawn magnetically to the dark side?
![](https://ichef.bbci.co.uk/images/ic/320x180/p0d9ccz7.jpg)
9. Why doesn't everyone clear up?
That messy person, who doesn鈥檛 pull their weight around the house - why people, why?
![](https://ichef.bbci.co.uk/images/ic/320x180/p0d9ccz7.jpg)
8. Why do we wear make-up?
Are make-up trends purely a fad, or is there some deeper purpose to our love of lipstick?
![](https://ichef.bbci.co.uk/images/ic/320x180/p0d9ccz7.jpg)
7. Why do we sit down to poo?
Ella gets personal to explore which is best for our business - sitting down or squatting?
![](https://ichef.bbci.co.uk/images/ic/320x180/p0d9ccz7.jpg)
6. Why can't we all be morning people?
Ella Al-Shamahi explores how our Neanderthal DNA may influence our sleeping habits.
![](https://ichef.bbci.co.uk/images/ic/320x180/p0d9ccz7.jpg)
5. Why do we shake hands?
Are we shaking hands to sniff each other?
![](https://ichef.bbci.co.uk/images/ic/320x180/p0d9ccz7.jpg)
4. Why do we procrastinate?
Can we blame procrastination on our evolution?
![](https://ichef.bbci.co.uk/images/ic/320x180/p0d9ccz7.jpg)
3. Why do we kiss?
The kiss - an exchange of 18 million bacteria or a romantic evolutionary hand-me-down?
![](https://ichef.bbci.co.uk/images/ic/320x180/p0d9ccz7.jpg)
2. Why do we do things that are bad for Us?
Ella investigates a possible reason behind the common drive to put our lives at risk.
![](https://ichef.bbci.co.uk/images/ic/320x180/p0d9ccz7.jpg)
1. Why Is Heartbreak So Painful?
Is the pain of a broken heart much more than a romantic trope?