This thread seems a little to light on the "results" part.
The reason the Africa part keeps coming up is because we had millions of years as hominids there in nice toasty warm Africa. That is long enough for us to have gotten some things firmly encoded into our bodies (like a primal diet as opposed to grains). We are not lemurs and never will be but we share virtually all of our DNA with hominids.
This thread seems a little to light on the "results" part.
You lousy kids! Get off my savannah!
I did some extreme stuff with cold last winter; barefoot walks in the snow, lengthy exposure to sub-zero air while minimally clothed, bathing in water as cold as 33 degrees for up to 45 minutes. I had intended to give it all up during our short summer, but still find I'm sneaking in a soak or natural water dip several times a week. When I was in the military, doing military PT stuff, I lived on Extra-Strength Tylenol...4-8 a day. Nowadays, I'm 46 and exercising harder than I ever did in the military, taking no tylenol, using cold baths for recovery. I'm also leaner and weigh less than I did when I was 21, eating SAD and doing chronic cardio. I went cold-turkey with no cold baths for about a month, I was sore and limping--even took a couple tylenol--then decided cold was better.
Why it works, the science is there: anti-inflammatory, pain deadening, and uncoupling protein-1 activation for burning excess calories as heat and activating BAT. I wish there were a way to quantify the BAT, but the rest is pretty easy to see.
These guys know it works! Benefits of Ice Baths from Runner's World.com and Ice Baths | Cryotherapy | Cold Water Therapy Equipment* | Cold Tub ®
The anti-inflmammatory and pain deadening properties of cold are obvious as anyone who has ever put an ice pack on a sprained ankle can attest. No argument there.
Cold forcing the body to expend extra calories to keep warm, OK, I get that too. But there are other ways to burn calories, like exercise.
It's the protein uncoupling and the BAT stuff where this all starts to sound like Ray Cronise needed a second career after NASA so he became the King of Cold and like Jack Kruse needed "the next big thing" after the leptin reset to write about.
And, as Grumpycakes said, light on results. The results I have read are all conflated with other variables like changing to a primal diet, starting an exercise program, or wanting to do an additional tweak to the PB to see faster results when in reality the PB may have just needed some time to start working due to healing taking place.
Given the lack of evidence, I'm having a hard time finding fault with eating local, in season, organic fruits and vegetables, even if that means berries in January.
CT is a pretty interesting tool with a fair amount of supporting studies. I'm enjoying my experiment with it. I'll try to keep the topic back in that area. Please excuse the diversion.
Brown fat thermogenesis in cold-acclimated rats is not abolished by the suppression of thyroid function was written in 2001, this has been studied for decades, but thought to be a non-player for adults. Recent PET Scan studies show it is a major game-player in obesity--that's what I am after. I could care less what Cronise, Kruse, Nickoley, Ferriss, or any other 'guru' says. BAT is not really fat so much as a fat-burning, metabolism controlling organ. Big money being spent right now to exploit BAT with pills vs cold.
otzi, are you doing CT after resistance training or before?
Is anyone other than KA24 doing CT before resistance training?
I gave it a shot doing CT before resistance training for the first time today. I did have a pretty good work out. Went up in reps in all my exercises, but that is not unprecedented. I'll have to see a lot more before I can say it's turning me into superman.
One thing I can say about doing a work out right after CT is you warm up right away. I'm not sure if that's really a good thing, as part of the benefit of CT is forcing the body to burn calories to warm up on its own. I look at it as a second work out each day, with out any additional wear and tear on the body. Would not some of this benefit be lost if you warm up from exercise immediately following CT?
What if you are one of the apparently many people who have no BAT but are sitting their in your ice tub anyway only freezing your butt off in the figurative and not literal sense?
For the whole CT thing to have merit (beyond simply burning off calories due to system wide stress) it has to be about the BAT. I am not saying that it is wrong, just that I haven't seen anything yet to convince me to put my tender behind into ice water. Like GC said, an interesting ongoing experiment but light on results.
I'm sure you're not just blindly following a guru, Jack Kruse or any other. But the people who endorse an idea do have some bearing on the credibility of that idea for me. The fact that Dr. K endorses it makes me more skeptical in the same way that I would be skeptical of any ideas in the latest "Miracle cure that THEY don't want you to know about" book from Kevin Trudeau.
So, in the last coupleof weeks my hands and feet have been quite cold. This has never happened to me before.
Could it be related to taking 'Scotsman showers'? (Or is it more likely to be thyroid related)
And keep in mind that Kruse is saying that paying attention to these things is necessary for those who want to be *optimal* - however one might define that - not for those who just want to feel good, live health, look good, & live a reasonably long life.
I personally don't know that I'm interested in "optimal." I'll take the guidelines so far as they make sense to me and continue bearing results.
Keep in mind, also, that Kruse mostly speaks to those who have tried primal and not found all the success they desired - like me. I did "traditional foods" for several years, and primal for over 18 months before some of Kruse's "tweaks" ended my eating disorder / sugar addiction. Many people need nothing more "complex" than mostly avoiding the foods of modern civilization, including grains. I needed something more. I absolutely needed the breakfast timing & size.
I continued to see more health changes following his tweaks, largely stemming from now being able to stick to being 100% wheat-free (since any little bit was literally, slowly, killing me). 80/20 had been denying me success for a long time.
So Mark is a great place to start, and a great place to stay, if primal alone works for you. Without a doubt.
5'4" 36yo mother to five sweeties & married to their AMAZING DaddyGrok
Starting: 185 lbs (March '10)
Current: 132.5 lbs
Goal: 135 lbs (Hit Jan '13)
Beating bingeing since 10/31/11 on my Leptin Reset journey