>" One can fast for 72+ hours to get a massive spike in HGH."<
Relevant URL:
https://hrtguru.com/does-fasting-really-increase-hgh-levels/
referenced articles therein say fasting 48 hours causes a 5-fold increase in HGH, fasting 5 days causes a 10-fold increase, but that 5 days of fasting also makes the cells unable to utilize the extra HGH:
"Despite the fact that fasting may increase your growth hormone, it actually suppresses the anabolic effects of HGH. That’s because fasting lowers the sensitivity of your cells towards HGH, and decreases its main anabolic mediator called Insulin-like growth factor 1 (IGF-1).
Thus you will not experience the benefits of increased HGH on muscle mass, energy levels, etc. ..."