Dave wrote a book "The Human Body Owners Workshop Manual", he would be a very good guest to talk about health and many other things. Yesterday I watched him on here - https://youtu.be/kXk-bVI8_QU - what an amazing stuff! He has also been on "Late Night with Milenko" show in Macedonian National Television, where he spoke about Flat Earth - https://youtu.be/Gp_awTGVRRw . Greg, please get him on your show!