Wednesday, August 8, 2012

Water. It isn't just a drink!


What are the main things that we need to live? Food and water? Are you sure, that those are the only things that we need for our bodies and mind to function properly? Well, in a nutshell, yes, but I’ll get into the detail another time.

The most basic thing that our bodies need to function properly is water. Our bodies are 46-61% made out of water and the amount of it varies between age groups and sexes. Women do tend to have more adipose/fat tissue then men, and that tissue is more hydrophobic. That means, that it does not like water, to put it simply (adipose tissue contains only 10% of water). Men, on the other hand, have more muscles than fat, which means, that they have more water in their bodies (water makes a 65-75% of muscle)1,3. A study made in 2006 states, that the bodies of infant boys had a greater percentage of water than the bodies of infant girls2 A study published in 2002, where over a course of an eleven day hike they observed nine young people (age 24 ±3 )and eight older people ( age 57 ± 3) they found out that “The finding that the older group had both higher levels of dehydration and impaired psychomotor functioning and jump performance tests is an important consideration«6. Also »Both groups showed a marked slowing of choice reaction time after the 10 days of walking«6 which clearly means, that in order to have your metabolism running optimally, you need to be well hydrated. Proper hydration not only improves your concentration and gives you more energy, but it also helps you to burn more calories while resting by up to 3%.


Nevertheless, both men and women need water to live. Period! Water transports nutrients, gasses, waste, hormones and ions thorough our bodies. It plays a big, if not the biggest part in almost all bodily functions, not to mention that it helps to regulate our temperature, it helps us to have regular bowel movements thus helps our bodies to detoxify themselves and it lubricates our joints.

It is said that a grown adult loses around 2,2 liters of water per day, just by living and breathing. Now, the thing with water is that you do need to drink it, but how much is kind of a problem. I usually instruct my clients to drink around 20 ml per kg if they are exercising regularly and around 30 ml per kg if they have very hard and long workouts (like preparing for a marathon). Just a 2% loss of water can drastically impact our ability to exercise right and a 5% drop can reduce our exercise performance by a whooping 30%5.

But the rule of thumb is much simpler. Drink fluids until your pee looks like lemon juice. If your pee looks like apple juice, then you need to drink more water. But if it looks like water, then you need to cut back on your water intake, because you might wash out a lot of essential salts from your body4.

A great source of water is… well, no need to reinvent the wheel… A good source of water is water. Actually it is the best source of water. Green tea is also a great option, just be sure not to overdo it, because it has caffeine in it. Whatever you do, just be sure to avoid juices and drinks with artificial sweeteners and coloring in it. You do not need the extra sugar juices have and especially not the extra artificial sweeteners.

Until next time, stay strong and be kind.

Picture taken from: http://tiny.cc/0qvmhw

Links:
1.http://www.tkevinwilsonlawyer.com/library/gender-differences-and-body-water.cfm
3."Exercise Physiology: Energy, Nutrition, and Human Performance"; William D. McArdle, Victor L. Katch, Frank I. Katch; 2009
5."Sport Nutrition"; Asker Jeukendrup, Michael Gleeson; 2004
6.http://www.jappl.org/content/93/2/714.full

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