MushuChupacabra

Miles.

Probably.

There’s also something called a ball peen hammer, which you can use to smash your thumb repeatedly.

While not as sophisticated as what you’re asking for, it’s less expensive, and produces similar value.

By doing physical activity that’s intrinsically rewarding.

If you enjoy bike riding, go ride your bike, and don’t even bother thinking about it as exercise. Enjoy, and get into it.

The fitness part is just a side effect.

Yes! My bad, will edit.

For temperature:

Water freezes at 0, boils at 100. Room temperature 20 degrees Celsius. Normal body temp 37 degrees.

Trivia of minus 40 Fahrenheit being the same as minus 40 Celsius.

Height and weight are usually still thought of in imperial (canadian here), so I think of myself as 6’2", instead of 188 cm.

Volumes and lengths and weights are related. One cubic cm is one mL of liquid. One cubic centimeter of water weighs one gram. One thousand mL of water makes one Liter, which weighs one kilogram.

2.205 ponds makes one kilogram.

Shifting between miles and km is a pain in the ass, given the 1.6 km per mile.