It's not just a matter of symantics - for some kids, everything is literal. In parenting several kids with FAS/FAE, I've found that you have to be very careful with your instructions - because they'll be followed!
Physiotherapy: Using the PhysioBall To Build Strength
Try this with kids with cerebral palsy or Hypotonia. Having trouble developing good head, neck, and back control? Try lying your child face down on the ball, holding their hips, and encouraging them to lift their face while the ball is rolled forward.