Argh! I love my yoga teachers each and every one, but a few have an annoying habit of breaking promises:
"O.K., we're going to hold this [utterly excruciating, exhausting] pose for five breaths."
[TEN breaths later] "O.K., two more breaths now."
[TWENTY breaths later] "O.K., on your next exhalation, go even deeper."
[THIRTY breaths later] "O.K., inhale and move into [an even more excruciating, exhausting iteration of the original pose]."
And so forth.
No wonder people who don't already love yoga sometimes hate it.