After all, there has to be a reason caffeine is included in the most popular weight loss supplements. The reasons are that it has proven that it can increase the rate at which weight loss occurs.
Though being able to increase caloric expenditure is a good thing, unless stored fat is released and burned, significant weight loss cannot be experienced.
There are two ways in which coffee does releases stored fat, and both are attributed to the presence of caffeine.
Your metabolic rate is considered the number of calories burned at rest. It is sometimes also known as basal metabolic rate or resting metabolic rate. It differs based on lean muscle mass and other factors.
Wouldn’t it be nice if you could find something that would raise your metabolic rate while doing absolutely no extra physical activity? That answer is coffee.
A study carried out as far back as 1995 and published in The Annals of Nutrition & Metabolism (Koot et al.) analyzed the effects of coffee consumption on metabolic rate. The did the study with and without caffeine.a
Subjects were given coffee enhanced with 200mg caffeine. It was found that they experienced increases in the metabolic rate ranging from 3-11%. In fact, much of the increased burning of calories came from the oxidation of fat in the blood.
Another study published in the American Journal Of Physiology found differences in the metabolism boost to be as high as 29% in lean individuals. As well, in obese persons, the increase in the metabolic rate came in at about 10%.
Finally, another study published by the American Journal Of Physiology compared differences in metabolism between younger and old men. The study found that both groups of men encountered similar thermogenic outputs following the intake of caffeine.
However, the younger men’s group experienced an increased release of free fatty acids, translating to higher metabolisms.
While that is not a direct increase in metabolic rate, what is interesting is the fact that by increasing your physical activity, you indirectly increase your metabolism.
This is especially true in weight training, where muscle cell mitochondria become more efficient in burning fat for fuel. As a result, we stay leaner year round.
This explains why many athletes supplement with caffeine (or drink black coffee) prior to working out. The intensified firing and improved contractility of muscle will lead to higher calorie burning and can explain the improved metabolism in the long term.
It has been concluded that coffee boosts metabolism does. As a matter of fact, it allows the burning of more calories even when doing absolutely nothing. That means burning calories while you sleep! Coffee also increases thermogenesis, which is calories used for heat, as evidenced by raises body temperatures while using caffeine.
If you are going to drink coffee, just make sure it is black coffee. When you add sugar and cream to your coffee you actually can stop the fat liberating effects since insulin gets involved in the digestive process.