We were working on the BOSU ball this morning in exercise class when our teacher showed us the "dead bug" position. In this position, you sit on the BOSU, ball side up, raise your hands and legs in the air, and engage your abs.
While engaged, I remembered my old graduate school joke
about the centimeter and the erg. It goes like this...
If this is 1 cm,
Then, what is this?
It's an Erg, a dyne-centimeter...
Why is that funny, because an erg is the amount of work done by a force of one dyne exerted for a distance of one centimeter, in other words, a dyne-centimeter. Well, maybe it's not that funny after all.
One more, and then I give the floor to a youtube professional.
What's this..
It's a ferrous wheel. Of course, if it was Fe3+, then, it would be a ferric wheel. Hah, Hah, Hah, o.k. maybe that's not so funny either.
Now check out this one on youtube, and don't give up on it too early, it gets even funnier after a few jokes....