I added another source that relates alcohol and copious meal.
I added another source that relates alcohol and copious meal.
is not made up, reading this Wikipedia entry parents would say “better safe than sorry”
https://en.m.wikipedia.org/wiki/Cold_shock_response
Edit, add another more complete source https://wpool.fr/en/blog/temperatures-eau-piscine/choc-thermique/qcq-hydrocution/
It is about the difference of temperature, so, being under the sun for long time makes it more risky, even if the water is not so cold.
I added another link that maybe explains it better.
What you mention is also important, “entering water slowly…”