Sunday Rest: fartlek.

 Fartlek?

Well, a lek occurs when various male animals get together to show off their bodies and skills to a group of females in the hope of winning their favour. 

And, indeed, favours.

It's usually birds who are known for gathering in leks, especially grouse, but this behaviour can also be seen in Atlantic cod, marine iguanas, parrots, cattle, seals, wasps, and butterflies.

Luckily, everyone already knows what a fart is.

Yes, the mind is boggling.

Sadly, fartlek is really the same thing as interval training (that's where you exercise very hard for a while, then do something less taxing to get your breath back, then go back to the strenuous stuff again).

Still, whatever it means, it's brightened my day, anyway.

Sunday Rest: fartlek. This word is Swedish. In Swedish lek means play. The fart bit of the word is to do with speed.