I'm a new member to the forum, but I'm not exactly unfamiliar with Ray's ideas. I've been following his advice pretty closely for a few months now. Before applying some of Ray's ideas I was keto, and I had cold hands and feet all the time. I actually developed a pretty scary case of hyperventilation as well while being ketogenic. Not cool, it feels like you're having a heart attack or panic attack, because you can never "get enough" air into your lungs. Not a fun time in my life to say the least. But after bringing some carbs back in my diet the situation improved somewhat. The hyperventilation spells became much more infrequent. About a couple weeks ago I started thinking my main problem was intestinal endotoxin. I started to experiment with intermittent fasting, I remember Ray mentioning that skipping a meal can help reduce the LPS and starve bacteria. Needless to say I realize IF isn't a trendy practice in the peatsphere, but I think it's really pushed me over into that healing zone. My first meal always warms me up, and my hypervent. spells are basically gone now. Yesterday I decided to change things up and break the fast with a carrot salad. My thinking is that if I break the fast with some germicidal fiber it will only boost the effects. At any rate, I am very much pleased with this experiment, and I have no desire to stop it any time soon. I will post updates if things change. I was just wanting to bring this people's attention about the possible benefits of incorporating IF with Peat's ideas. Nice to meet you all and glad to be here:)