I’d take a bet you were a fast shower person. In and out in 5 min. I know I was just like that as a teen in a house of 7 people. Body odor problem was notable enough that I carried deodorant on me. I, like you, learned this simple trick later in life but shared it with my kids to help them through teenage years.

you're supposed to let it sit on the skin for a while before scrubbing and rinsing

Part of this is due to the heat opening your pores on your body and the soap doing its job by cleaning out the bacteria and oils that cause the smells. Scrubbing also plays a big role too, lather and rinse using a scrubber!

Doing this has allowed for me to skip shower days and I just need to scrub my head/face to remove oils before bed. I still wear deodorant, but it’s lightly scented because otherwise I have a naturally strong orange(fruit) smell that can get overpowering (to me).

I know we’ve got some cold shower bros out there and don’t worry, this still works in cold showers, just over longer stretches of time. I know this because Mother Nature doesn’t often preheat her rivers while I’m camping, but I still stay fresher than my peers.