I saw this "cold shower" trend in nofap recently, and I think cold shower does help you with nofap. It is basically stepping out of your comfort zone, but there are many ways to do it and you don't necessarily need to do it the "physical" way. Focusing on work instead of watching youtube, spend more time on productive things, developing some talent (learning a new language/instrument/skill) or simply read some books. As long as you're out of your comfort zone, you're improving.
A comfort zone is a beautiful place but nothing ever grows there. I love Cold Showers they are very beneficial.
