Just Swim

Excessive swimming can be a form of self-harm. If your exercising is starting to take over your life, if you feel anxious if you miss a session, or if it’s becoming more important than work, family or friends, you could be developing an exercise or training compulsion (sometimes called an exercise addiction) and you should speak to a GP or Healthcare professional for advice

https://www.swimming.org/justswim/swimming-improves-mental-health/