I don't like it either, Brenda. Infact when it's time to do it I say, "If you have blood pressure problems please stay with this option and do not proceed to the half burpee." And it doesn't matter how often you cue, butts high, don't jump back long, keep it small, etc people do the full burpee and arch their back. I sound like a broken record in this track, guys watch your butts, half burpee only not full, watch your backs, don't arch your back, tuck in your chins. Most people are now doing the tap backs instead. Infact don't cue the half burpee when new people are in the class at all now, I believe it to be a potentially dangerous move never have liked the burpee, even in circuits as people just don't execute it properly.
Happy Stepping!
Always Be the Best You Can, Never Ever, Ever Give Up! Dare to be Different! What You See is What You Get!