after using a large majority of Charles Poliquin’s biosignature principles at my rugby club (Bristol Rugby) I can say it works and it produces damn good results. Quite often as coaches I think we can be too over reliant on science and sometimes we just have to accept that it works.. ‘because it works.’
I have also used the principles on myself and seen good results. For people wanting more information, I suggest googling it or if you have the time and money take one of his seminars.