You can definitely do 36-48hr dry fasts once a week. It would be similar to water fasting for 3 days. If you like the snake diet guy, he recommends in one of his lives to prep the dry fast with a kidney shot or some baking soda in water, do your dry fast, then break your fast and eat before working out. I wouldn’t double the protein intake before as that just gives the body more glycogen to use up before you reach any autophagy/fat burning. If you only workout 4 days a week, you can just do light cardio on the fasting days if you’re feeling up for it, or don’t work out those days.
I do 15-20 hours daily and then every so often I will do a 36 hour stretch. I’ve only done a few prolonged dry fasts but I feel like the intermittent with a few 36ers has been just as effective based on other peoples experiences. Looking back at pictures of myself 10 years ago, I look way healthier now after consistently keeping up with fasting. My skin is much softer, I don’t have any acne, bumps or anything… perfects skin if I must say myself.
I didn’t really have any other health issues other than I would get super itchy rashes rather frequently on my skin, but that is long gone.
Just a thought about the protein; todays protein intake is usually way more than the need for it. Not often double or more. Fasting also increases growth hormones so I would take the opportunity to have one day less of protein (without increasing other days) and relieve the organs a bit from the protein digestion without losing muscle mass.