I started off with 16:8, but my body shifted to longer intervals (20:4, 21:3) on its own. Only rarely did I try longer than 24 hours fasts.
My blood pressure definitely responds to fasting. I went from 150/100 to 115/75 within months. IDK if this can happen in other people, we are a fairly diverse lot.
Food eaten during the eating window matters. Fats (avocado, olive oil, bone broth) will carry you longer than carbs. But one of the things I enjoy about IF is that I no longer have to watch my food intake too strictly. An occasional treat is OK.
As for resources, I believe that Jason Fung, a Canadian doctor, is a good start. He has a lot of videos on YouTube and a few books out. His main idea is that you need to keep your insulin level fairly low in order to avoid metabolic disease, and that IF helps with that a lot.
Also, the r/intermittentfasting subreddit has a lot of veterans.
My blood pressure definitely responds to fasting. I went from 150/100 to 115/75 within months. IDK if this can happen in other people, we are a fairly diverse lot.
Food eaten during the eating window matters. Fats (avocado, olive oil, bone broth) will carry you longer than carbs. But one of the things I enjoy about IF is that I no longer have to watch my food intake too strictly. An occasional treat is OK.
As for resources, I believe that Jason Fung, a Canadian doctor, is a good start. He has a lot of videos on YouTube and a few books out. His main idea is that you need to keep your insulin level fairly low in order to avoid metabolic disease, and that IF helps with that a lot.
Also, the r/intermittentfasting subreddit has a lot of veterans.