I want to know the relative benefits of the different protocols (I asked on the fasting subreddit, but didn't get much response).

I am not overweight, but I see that IF can increase growth hormone and testosterone, and increase insulin sensitivity, which are of interest to me. I would like to know if I am better doing a couple of longer fasts peer week, or if skipping breakfast would be enough. (Longer fasts feel like they have more benefit, but are more effort, especially when I am trying NOT to loose weight).

Does anyone know of anywhere good to compare the benefits of different IF protocols?