I'm gonna say that's due to the diet and sleep with some placebo thrown in for good measure.
Diet and sleep definitely makes a perceivable difference however not masturbating definitely makes me a lot more energised (at least in the short term- never done it long term). Its not like I don't do it deliberately because I ever believed there was a benefit in no- fap (hence I'd be unlikely to be experiencing placebo) just sometimes I don't masturbate for a few days in a row because its not on my mind.
Best of luck breh. I'd love to do a mini comp but practically none go on in Wales. ...Or they do a **** job of publicising them.
Seems to me (in my limited experience) that the best bet is finding out what strongman gyms are within a reasonable distance and keeping an eye out for them having little comps. How you find out where they are seems to involve some luck