40 days, holy shit that’s a long time.
The increase libido is a huge Benefit hum.,. And it’s cheaper than viagra. Thoughts guys🤔
I was researching the effects of fasting on human growth hormone levels.
“But our concern here is HGH. It starts at 0.73 and peaks at 9.86 on a 40 day fast. That is a 1,250% increase in growth hormone. A shorter 5 day fast gives a 300% increase. All this HGH increases without drugs.
Fasting is a great stimulus to HGH secretion. During fasting, there is the spike in the early morning, but there is regular secretion throughout the day as well. Hartman et al also showed a 5 fold increase in HGH in response to a 2 day fast.
This HGH likely helps in the maintenance of lean mass – both muscle and bone.”
https://www.dietdoctor.com/fasting-and-growth-hormone
Benefits of natural HGH:
1) Increased Muscle Strength
2) Better Fracture Healing
3) Weight loss
4) stronger bones
5) Reduced risk of cardiovascular disease
6) Increased Libido
7) Decreased obesity
8) Better Mood and Cognitive Function
9) Better Sleep
DYOR but fasting for 5 days has shown to increase HGH levels by 300%. 
Discussion
Don’t think I would ever be motivated enough to do a 40 day fast.
But I do try to do a 4 day fast every 3 months.