Great article on Medium.

[Torchwatch]

An old athletics coaching book I read suggested the runner take on a fitness attitude, the author said never to catch the bus when you can walk, never to walk when you can run and never to take the lift (elevator) when you can take the stairs.
The same can be applied to your swimwear and shorts. take on a short shorts and briefs attitude.
So don't wear long trousers when you can wear shorts, never wear shorts below the knee, period. Go shopping in shorts a bit above the knee, go cycling in Lycra cycle shorts, go walking in shorts half way between knee and hip and go running in split sided short running shorts.
When you go to the beach wear your swim briefs under your walking or running shorts lay out your towel and slip off the shorts.
If you aren't used to speedos in public get 3" sides, you'll soon want to swim in 2" side suits and to experiment with 1" bikinis and swim thongs if only at home and the most quiet of beaches.
Start to wear brief underwear so you are used to how it fits, no more boxer briefs, boxer shorts or trunks.
Think brief, think short, be confident and have fun.