What makes metabolism possible?
There is one simple answer to this and then a very very long and complicated one that explains the simple one. Metabolism is a necessary result of the vast number of chemical reactions releasing energy every second of every day in each person's body in order to keep them alive in a biological sense of the word. This is one of the most complex and intense scientific areas of study on the planet and you can get very deep into complicated chemical equations, but the bottom line is this: organism's die without a continuous supply of fuel. Similar to putting gas in your car, the only difference is your car doesn't die it just stops running if you don't put gas in it. People die and don't come back by shoving more food down a dead body's throat.
The faster your metabolism, the more you can eat without gaining weight. So, in order to prevent obesity, you need to keep your metabolism going as fast as possible. You can increase your metabolism by exercising, eating regularly and by avoiding starvation & fad diets. You need to eat healthy, natural foods as well as possible, as many processed foods may contain ingredients that can disturb the balance in your endocrine system.
Most of your metabolism is aerobic. (it uses oxygen to produce energy) Red blood cells carry oxygen to your cells. So your red blood cells can act like a gas pedal on a car for your metabolism rate. If you get more red blood cells to your body faster, then your metabolism will increase. (This increase will only happen up until it hits a limit) This is why supplements that claim to increase your metabolism…
No this isn't a bad thing, it just means that your cells go through their processes quickly. Metabolism is not just how quickly you digest and burn food, it is all the processes in your body that makes up your metabolism. if you are worried for any reason, go see your gp to check for underlying problems...but no a fast metabolism is not a bad thing.