Cold Water Immersion
With this technique, the basic idea is this: submerge your body in cold water and let it bring your body temperature down enough to cause shivering. Shivering is almost completely fueled by fat, specifically the brown fat of the body (this is fat that is more metabolically active - the stuff that makes you look fat is known as white fat).
Also, the hormone release in response to the stress of cold water immersion may lead to an increase in metabolic rate.
I came across this cold water immersion idea in a past issue of Muscle & Fitness and the research they presented to back up the idea looked interesting so I decided to give it a try!
The exact study they quoted involved performing activity while in cold water but since I didn't have a big cold water tank, I decided to try it out with just the shivering in a tub.
Three times a week for a month, I filled a tub up with cold water and went in and started shivering. Now when I say cold water, there wasn't a hint of warmth in it - it wasn't ice water but was probably about 50 degrees F.
Let me tell you, you can really find out what you're made of when you're faced with a tub full of cold water that you have to get into! You step in, lay down up to your neck then just stay there for 20 minutes. You'll start shivering pretty quickly!
** Naturally, watch out for signs that you're getting TOO cold - we don't want hypothermia here! If you start breathing rapidly or you can't touch your index finger to your thumb, stand up out of the tub and turn on a warm shower to heat yourself back up.
The Verdict:
I DID actually notice some results over and above what I've experienced with standard fat-loss programs. It wasn't a HUGE difference but I definitely did see a difference. If you want to burn fat while lying down, this is about the only way to do it!
The cold water also has an AMAZING diuretic effect on the body - it flushes subcutaneous (under the skin) water out of your body FAST. I think (and this is just my theory) this is another survival mechanism of the body - when your body starts losing heat rapidly (as it does in cold water), it immediately tries to flush out the best conductor of that heat (which is water). I noticed a major difference in muscle definition immediately after getting out of the cold water.
This MAY be a good technique if you have some stubborn fat you'd like to get rid of AND you're willing to sit in a cold tub 3 times a week for 20 to 30 minutes. The hormones released (specifically norepinephrine is one that has been mentioned in conjunction with cold water immersion) have the ability to unlock those stubborn fat cells.
You'll have to weigh these factors to decide if you want to try it.
One other bonus...you'll develop GREAT resistance to cold weather by doing this regularly. Your body will be better able to maintain core temperature because you're training it to adapt to cold.
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