Hey folks, this is Ben Greenfield and those of you who are listening who may be in the

paleosphere are most likely familiar with Dr. Jack Cruz and those of you who are not

may have also seen some of the talk that's been going on about something called cold thermogenesis.

And Dr. Cruz happens to be somebody who is quite the genius when it comes to this stuff

and I'm going to tell you a little bit about him and then we're going to delve today into

how this concept of cold thermogenesis may help enhance human performance.

So Dr. Cruz is a neurosurgeon.

He lives in Tennessee, in Nashville, Tennessee, where he heads the staff of Nashville neurosurgery.

He treats chronic pain, neck pain and back pain.

He is well respected as a guy online who's putting out some great articles over on his website.

Jack Cruz.com, he has extensive medical training and a huge passion for wellness and nutrition

that kind of shines through in his fantastic articles that you can read over on his website.

And today we are not really going to be talking so much about many of the things that you

may have heard Dr. Cruz talk about before, namely fat loss and how cold thermogenesis can

affect that and leptin resistance, but rather we're going to kind of go after human performance

today.

So Dr. Cruz, thank you so much for coming on the call.

No problem, Ben.

Great to be here.

So when I wrote you and asked if you wanted to come onto the podcast, you mentioned that

you had seen some evidence that doing something like cold thermogenesis may help enhance human

performance, but before we get into that, can we kind of step back and maybe have you explain

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