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10

There's a video on YouTube called "Sugar: The Bitter Truth", a lecture by Robert H. Lustig, MD, UCSF Professor of Pediatrics in the Division of Endocrinology, that (from my understanding) implies that, at least in the context of taking in copious amounts of unhealthy sugars such as sucrose, fructose, and high fructose corn syrup, you can offset the bad ...


8

Unfortunately, it's not always simple arithmetic. Yes, losing weight is essentially burning more calories than you consume. But, this simplistic view doesn't account for the complex happenings of food digestion and body activity associated with eating unhealthy food. A prime example is diet soda. Diet soda has 0 calories, so theoretically, you could ...


7

There really is no "limit" to how many calories that a person can absorb in a day. Using them, however, is where other factors come into play, that are very much dependent on the person. For example, during his heaviest training days, Michael Phelps is reported to be consuming between 10-12,000 calories a day. However, if you don't exercise to meet that ...


6

In a very real sense, you may be reading more into these numbers than is there. First and foremost, our bodies are designed to be efficient at maintaining its operation. That includes the amount of body fat you have, how much energy it expends, etc. Your body has adapted to the approximately 2000 Calories you are consuming. At your activity level, height ...


5

Unfortunately, not all calories are the same. The problem is that your body needs vitamins, minerals, and protein. Due to the way fast food, and most takeout is prepared, the nutritional value is very limited. You will be at risk of malnutrition for sure if that was your only diet. Even if you supplemented with a multivitamin, you will be hitting your ...


5

Unfortunately it is as simple as eating less calories than you burn on paper, but greatly more complicated when you delve into the energy balance equation. Anyone that claims any metabolic or energy system in the body is simple is grossly misinformed. The element of complexity lays in several factors - a few of which are explored here, but mostly it is in ...


4

BMI isn't something you use to calculate your personal fitness, it is a statistical measurement and highly inaccurate for personal use. There are a lot of diets that 'speed diet' your weight down and don't care about muscle loss, what counts is the result on your scale to make them look efficient. Safe rates of weight loss are mostly determined by your fat ...


3

If you take a look at A Biometric Study of Human Basal Metabolism, where Harris and Benedict introduced their formula, you will see one important sentence: These equations have been tabulated for values of weight from 25.0 to 124.9kgm. [sic], for stature from 151cm to 200cm., and for age from 21 to 70 years, so that the most probable basal metabolism of ...


3

It means the equation isn't perfect, but just an estimation. You happen to have found one case where it fails quite a bit. Of course, it doesn't help that you didn't describe an actual human being (the shortest verified person is 54.6cm, that is 21.5 inches). I don't feel like doing the path, but I'm sure the formula provide reasonable estimations for ...


3

Your diet needs significantly more protein. Despite what you may think, it won't make you gain body fat. Quite the opposite actually. When body-builders/fitness models are cutting their body fat they tend to increase their protein and fat intake. For breakfast you should eat regular eggs along with egg whites. It will help with absorption and digestion ...


3

Eating well under your recommended levels can also be a reason for not losing weight. The body needs a certain amount of calories to simply carry out its daily activities such as breathing, digesting, and keeping up with your physical activities. Every person has an amount of calories required each day to maintain their current weight. People who gain ...


2

If you aren't severally over weight, the rule of thumb is that you should not be running more than a 3500cal/week deficit. As for day-to-day, I don't think it matters too much, so long your weekly deficit is in the above range. In fact, not being able to fast for 24 hours without problems (getting drowsy, hypoglycemic, ...) is a symptom of inadequate diet. ...


2

I, too, have an Andriod phone. After searching quite extensively, I could not find any apps that are aimed for gaining muscle weight. But... Calories are not the biggest factor in gaining muscle mass, although, it plays a slight part. Most lower and middle class households eat more than enough calories as it is. In order to gain muscle weight, it is good ...


2

First and foremost, I am not a dietician, so add 0.2 kcal for a grain of salt. That being said, there's at least tow different kinds of hungry in my experience: one is the feeling of a physically pretty empty stomach, the other is a low level in the energy supply (blood sugar). The former will decrease if you eat more (by volume, salad, water, and those ...


2

Without more detailed information (specifically height and weight), it is impossible to give you a personalized recommendation. If you update your question with these details I can come back and give you a more in-depth and relevant answer. There are three very important guidelines to keep in mind regarding weight loss. To achieve weight loss, you need to ...


2

First let us start with the goal. Fifteen pounds in three weeks is five pounds per week. One pound is about 3500 calories. Therefore you would need a net deficit of 17,500 per week. That is not insignificant. I am all in on setting strong goals, but it reaches a point where it may be too aggressive without proper supervision. If like many reasonably ...


2

There are plenty of formulas for calculating required calories. Some are even based on science. However, since every individual has different requirements based upon lifestyle, etc., I find that the best way to control and monitor calories is to become knowledgeable on serving sizes and food content. So, to answer your first question, I would not use a ...


2

I think that having at least calculated a few of your baseline TDEE values can be beneficial if you're overweight and have gotten your body "used" to under consuming calories based on something like say, willpower for example. Body weight x 24 is an absurd amount, for me that means my body would require roughly 4200 calories for maintenance. My actual ...


1

The training is harder because you probably have depleted all glucose in your body. Your body have a hard time functioning since it have no readily available fuel and tries to use your fat store for energy. You don't write your height or fat% but assuming you are around 175cm, you probably are pretty low on fat mass, and is probably metabolising muscles as ...


1

Personally I would say no, this is not enough to stay in good health. I would say that you are not consuming anywhere near enough calories. I am surprised you are only starting to feel the effects of this now. Assuming you are a male, I would recommend that with doing that amount of training you should consume (cleanly) closer to 2500-3000 calories. This is ...


1

The Real Bill touched on some very important points, but I felt the need to add some clarification and supplementary information that simply wouldn't fit in a comment. Measuring success You will want to track your body fat as it is the most effective means to measure your fat loss. I use the Navy method which works best for me. With it you only need to ...


1

Lifting weights is great for you as long as you're using proper form and not pushing yourself too far. Lifting weights boosts your metabolism, even after you're done working out for the day. People looking to lose weight should be lifting. You may see some weight gain from lifting, but remember this is from gained muscle... not fat. A good diet is ...


1

I think the base idea of burning more calories than consuming is correct - however, think about all the factors involved in actually determining both. What you burn is largely a factor of your metabolism AND if you metabolism is not near average - the avg calories burned based on your rest burn rate and exercise burn rate could dramatically be off. By ...


1

There is going to be a lot of conflicting view, simply because we don't understand a lot of the science behind it. Your best bet is to look at long term solutions, read everything you can from both sides of the fence, and come up with a sustainable solution that works for you. In general, yes, if you take in less calories than you expend, you will ...


1

Weight-loss is a bit more complicated than the simplistic views presented in magazines and tweaked in the ads. Healthy meal is not necessary a diet-friendly meal. Subway sandwiches are generally good, but what is making them non preferable for dieting is the bread itself. If you are looking for a book on the subject, I highly recommend you Why We Get Fat: ...


1

Indeed. Despite it's widespread use, the formula is clearly not extensive. Try running the relevant calculations against the equations for male/female using a 2 year old weighing 27 lbs and 36 inches in height and you'll find female have higher BMR! If you consider the physical difference between male and female at toddler age is pretty minimal the I ...


1

You are confusing the formulae a bit. The 1.2 is from the Harris Benedict equation IIRC, which already takes into account your activity level. If you are mostly sedentary, then you will multiply by 1.2, to get a daily need of 2640 calories. At 5'10" and 240, unless you are a seriously competitive bodybuilder, you are probably in the obese to morbidly obese ...


1

Can such a drastic drop in daily calorie intake affect the speed of my metabolism (which I don't want to change) or have some other negative consequence? After you calculate your BMR you need to multiply it by an activity multiplier to get your actual calorie burn. So lets say your BMR is around 2000 and you are somewhat activate. You can multiply ...



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