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When you talk about "weight loss" that takes into account everything in your body. Things like organs, bones, muscle and fat. When you talk about "fat loss" this specifically is how much fat you have in your body your have lost. This is why it's important when weighing your self to understand that that is your total body weight. Once you know your body fat percentage you can figure out how much of your total body weight is fat.
Weight loss is accomplished through the burning of fat for calories, which happens when the body uses more calories in the course of a day than it has taken in. All weight loss involves the burning of fat. Without "fat burning," there is no weight loss. "Fat burning" is the only kind of diet there is that will result in the reduction of body weight.
They are designed to reduce body weight through reducing body fat content.
An effective weight loss program involves consuming fewer calories than your body uses. This forces the body to use the fat reserves. As the body uses more fat, the fat cells shrink. This is why most weight loss programs specify limited caloric intake combined with increased activity.
True.
There are a few indications that the body is burning fat for energy. One of these indications is weight loss.
Body fat calipers are an accurate way to measure one's body fat percentage. Weight loss specialists, trainers and doctors will often use these tools to measure one's weight loss progress. They simply pinch the skin and fat in predetermined areas and compare it to a chart so get the proper measurement.
There is no way to reduce fat from any one area of the body alone. This type of "Spot Reduction" is a myth. Your body loses fat from all areas of the body equally. Doing arm exercises will firm and tone up the muscle under the fat, but has no direct effect on the fat itself. General weight loss is the ONLY way to lose weight from any area of the body.
Yes it does. Low calorie intake reduces your motivation to do exercise, and over an extended period causes the body to release fat more slowly (starvation defense mechanism), reducing the fat-loss effectiveness of exercise. Note the difference between weight loss and fat loss - the techniques to tackle the two are not entirely the same.
Body fat meter is a great tool that helps you lose weight faster. It tracks your weight and body fat. You can read more here: http://belly-fat-loser.com/body-fat-monitors/a-body-fat-monitor-%E2%80%93-how-this-%E2%80%9Csecret%E2%80%9D-tool-helps-you-lose-fat-faster.php
If you were to lose only muscle mass, your total weight would decrease, but your body fat percentage would increase, as you'd be a greater percent body fat.
This is just an educated guess, but I'm betting that you lose the same percentage (say, 10%) of fat everywhere in your body when you lose weight. In a place where you have little fat and lots of muscle, 10% of fat loss wouldn't be very obvious. Because your breasts are mostly fat, 10% of fat loss would be much more obvious, making it seem like you're losing more weight/losing weight first in your breasts.