For maximum benefit of a therapeutic backrub, the long, upward strokes should be repeated for one to two seconds.
one to two minutes.
three to five seconds.
three to five minutes.

well say a good goal is to do 150 sit ups in a week! or 90 pull ups a day. even 60 push ups in a month these are all fair goals!

steady state because it the only on that maes sense

there should be recorded video of the class under the assignments for the day