You are right @chbartist
Marginal effects in my opinion are the keys to success
I have always tried to have a body without fat and lose weight, I have looked everywhere for quick methods to achieve this goal without results, now I am convinced that to achieve a goal you have to be patient and spend a lot of time. time by practicing a simple and easy exercise, so for my case I spend 30 minutes walking every day a month ago and I can say that I start to see small improvements and so I think in another 5 months I'll reach my goal.