@georgethegeranium I DID get a very serious UTI once, from not being able to go to the loo regularly and consequently not drinking enough during the day. Toilets are never located conveniently, ours was opposite to the staffroom on the total opposite end of the school from my classroom. Lunch was the only time I might have time for a wee. Quite often I had to choose between going to the toilet or having a very quick 2-3 min lunch.
We had no midday assistants so we had to stay in the hall to supervise lunches (KS1) until every child had finished. In addition to that we dealt with first aid, safeguarding or bullying incidents. When you have to choose prepping afternoon lessons or eating, you inevitably choose lesson prep.
My typical day started at 7.30, walking to the photocopier by 7.45 because by 8am there would be a long queue. I would typically finish at 5.30-6.00 and then WFH from 8-11.00. By Friday afternoon I was quite literally on my knees, still wearing Thursday's messy shower- bun.
We once ran out of everything, no pens or pencils, no glue sticks, no exercise books, no colour copier. My lovely TA found a box of old chewed up pencils at the back of the cupboard, which we promptly put to use.
These are your children's schools, hospitals and universities. Think about that for a moment.