Core strength and stability is very important to me. Tennis is all about rotation of the body and my ability to create power. I incorporate a lot of abdominal, back and glute exercises into my gym sessions. ↗
For a traveler going from any place toward the north, that pole of the daily rotation gradually climbs higher, while the opposite pole drops down an equal amount. ↗
The best, most successful managers in the modern era are those who can keep a player happy even if he is not in the team. Given the size of the squads and the use of rotation nowadays, that's tougher than it's ever been. ↗
It does not seem, however, that organic chemists were much worried about barriers to rotation in organic molecules in general at that time because there was no technique available to demonstrate the phenomenon experimentally. ↗