Grumpy Old Geeks People Josiah Zayner Person Josiah Zayner 2 mentions in 1 episode Josiah Zayner is a biohacker discussed for experimenting on himself and warning about the risks of doing so. Mentions 248: Side Hustle Feb 26, 2018 1:35:31 Josiah Zaner. He's a very famous biohacker. 1:35:48 He's a very famous biohacker. And he performed his own fecal transplant and tried to edit his own DNA with CRISPR