Standing around chatting and getting in the way of people trying to swim up and down
Swimming widths across the middle of the pool when everyone else is swimming lengths
Fast swimmers in the slower lanes ploughing into everyone
Slow swimmers in the fast lane holding people up
Diving in despite signs forbidding this, and the pool being quite full.
Doing the backstroke in crowded sections of the pool
AIBU to sometimes think going for a swim is more stressful than relaxing?