We have a newish head, and this is his latest brainchild . Even if they're caught yawning discreetly behind a hand, the children in his class (years 5 & 6) have to go to the hall to do 10 star jumps every time they yawn.
Dd1 has allergies, and particularly suffers with house dustmites. Despite anti-allergy bedding, antihistamines etc., she often has problems getting to sleep and is tired the next day as a result. It's not her fault. I just thought... WTF?!