The tan lines a cyclist are the visual reminder that you are a Time Bandit. The hours it takes to develop these require lots of kilometres on the bike, you can’t develop that kind of uneven colour sitting in your garden or on a beach. I have some friends that have cultivated a permanent one that lasts year round.
The other part of being a Time Bandit myself is that I have to steal time from my family & friends. Like most fathers riding normally is a charge of the (early) light brigade. Those 3-4 hour rides are easier to negotiate when you’ll be back by 10:30am. As a parent it’s all about balance as you always need to be you, but you also need to be their Dad or husband.
Maybe now when those tan line days come I cherish them even more, because I realise how much time has been stolen to get them.