Metabolism is a term used in describing all chemical reactions involved in the maintenance of a living being. Metabolism can be divided into two types: catabolism and anabolism. Catabolism refers to the breakdown of the molecules so as to obtain energy.
Anabolism refers to the synthesis of compounds that are needed by the cells. Resting metabolic rate (RMR) or basal metabolic rate (BMR) refers to the rate at which a body burns calories or energy when in resting mode. In order to survive and carry out essential body functions like respiration, toxin removal from kidneys and so on, these calories are needed.
Around 50 to 75 percent of a person’s total energy expenditure on a daily basis is attributed towards RMR. RMR can be calculated using a metabolic calculator so that you get an idea how many calories you will need a day.
RMR, the whole story
As mentioned above, RMR is responsible for the carrying out of regular bodily functions that are needed for one to survive. However, did you know that if you are looking to lose weight, you could use a metabolism calculator to find out what your calorie consumption should be like? More specifically, using a basal metabolic rate calculator, you will be able to find out an estimate of this figure. You should ensure that your workout that you incorporate as part of your daily life allows you to burn more calories than those that you consume. With this information, you will be able to lost weight successfully.
When using RMR to diet or lose weight, there are some essential facts that you should bear in mind. As you age, your RMR decreases. This means you burn less and less calories as you become older. Also, when your weight drops, your RMR drops. A person’s metabolic rate is highly dependent on genetics. It is believed that genetics plays a role in how fast or slow one is able to burn calories on a regular basis. As you increase your muscle mass, your metabolic rate will also in turn increase.
However, when you lose fats, you also lose the muscle mass. As such, if your weight dips because of this, then your RMR also drops. In this case, once normal diet is resumed, you are more likely to gain that weight again. In order to prevent, you could complement your diet with exercise. This will help you lose weight, yet retain muscle mass and therefore RMR as well.
How to calculate RMR
Using a resting metabolic rate calculator gives an indication of how much calories one should consume given his/her current activity level. The RMR calculation shows the rate of metabolism at times of rest. Therefore, it may be best to calculate RMR probably after a full eight hours of rest. The way to calculate RMR is fairly easy. Using the Mufflin equation, you will need to take into account your weight, height and subtract it with age. However, there are online calculators to do the math. The input factors are different for men and women, body stature and age.
What factors decide RMR or BMR
Different people have different RMR. So, what is it that determines their RMR? There are various factors that affect this. One could be the amount of muscle mass in a body. The more muscles a body has, the higher the RMR. Age can also affect RMR and this RMR decreases as one gets older. As mentioned earlier, genetics also affects RMR.
Even the weather can affect RMR of a person. One who lives in a cold environment will have an increased RMR. This is because more energy is expended when the body tries to adapt to the cold. Food can also affect RMR. Eating small and regular meals can help increase one’s RMR. Additionally, the consumption of metabolism boosting foods like fruits and vegetables can increase RMR.
Pregnant women may also find themselves with increased RMR. It is said that by the third trimester, the RMR is significantly increased. It is important to note that if you go on a crash diet to lose, you are doing yourself severe injustice. Crash diets make your body think that it is going into starvation and then goes into survival mode.
The body fights to retain the fat content and any weight loss. Some supplements can also raise or decrease RMR. For instance, ephedrine can increase resting metabolism 3 to 16 percent in doses ranging from 0.25mg to 150mg per kilogram of body weight per day.