Thursday, January 10, 2008

Don't Eat Your Muscle

Calories has become the term of evil. ‘Calorie is bad’. ‘It makes us fat.’ That is probably the generally picture of it in most of our minds now. Too much calorie can indeed kill our heart, liver and artery. But without enough calories, we won't get any better.

Before I open my big mouth to argue anything about it, I just really want to make a very misleading commercial term clear. We heard it on TV everyday that Our product only contains XXX calories each. I have no idea how could they allow this on commercials. Here, if you read at the backside of the package, you will find out that actually: 1 calorie= 1 kcal, where ‘kcal’ is the official physical measurements for energy as in ‘kilo-calorie’.

So, WHO recommends a health amount of energy for women is 2000 kcal, and 2500 for men everyday. Ideally, the energy should be evenly distributed among our three meals a day, which means if we have no snacks or sugars in between the meal, we need about 700 kcal at least per meal. Each 700 kcal is responsible for our life activities until we have the next meal. Now, look at your cereal box and find out how much energy per serving it has. Some famous brand is proud to announce their cereal to be 105 kcal per serving or something like that. That's 600kcal short of energy for your body until lunch. Here comes the good bit. Many of us will say: that's good, the other 600 kcal will go from my fat and I will get thin. Unfortunately, it doen't work like that. For many of us, the majority of the energy we consume is to support our brain activity. You may not feel as sweaty as exercising but brain consumes no less than that. But if there is not enough energy for the brain, the body get it mostly from ..fat? we wish.

Idealy, it will be carbohydrates we eat. Carbohydrates are the real green energy for our body. Unlike protein and fat, carbohydrates produces fast energy supply to our body without harmful residue but H2O and CO2. However our body can't store carbohydrates. So when our brain needs more energy than we eat, it gets from our protein, not fat which is the last choice for brain to get energy from. So what protein does our body use first for energy? Muscle. We will lose weight no doubt, as muscle weight much more than fat. But we are not getting rid of any fat. Of course, when we are down to the degree that our body has to consume fat for brain activity, our brain probably will starve and we should keep our fingers crossed hoping we won't get fired.

Don't have enough energy each meal is like eating our own muscle, unless we don't use our brain at all, again we wish.

No comments:

[Homepage] ----- [Gallery] ----- [Guest Book] ----- [Yang's Blog Lab]