They rise in mechanical wonder and then stop, abruptly, on eleven, where the elevator doors slide open to no one.

NEWYORKER: Playdate

The bottom line is that people often get addicted to caffeine which is added to the DMAA, and often develop headaches if they stop using it abruptly.

FORBES: Is DMAA Dangerous To Your Health?

The horse seemed at first like a bad bet, with trainer Rogelio calling the horse "crazy" and "nuts" for its tendency to abruptly stop and ignore instructions from its jockey.

WSJ: Paralyzed jockey Douglas now successful owner