how do you keep yourself in shape?

I eat a lot of pies and puddings to maintain my round shape.

* Know that round is a shape.
* Alternate swiping left and swiping right on your phone.
* Walking from the couch to the fridge and back burns 41 calories.  Carrying back a beer will burn an extra 3 calories. 

I heat my home with fire wood and it's a lot of work to cut down trees - buck them up  - splits the rounds and stack the wood. Cheers!

Biking, mainly. That's my primary means of exercise. 

Playing way too much Pokémon go 

i don't 

The university I attend has hills for days. Walking from class to class provides more exercise than I could ever need.