Determine your BMR using the Mifflin-St Jeor Equation. If you know your body fat percentage, the Katch-McArdle Formula might be a more accurate representation of your BMR. Remember that the values attained from these equations are approximations and subtracting exactly 500 calories from your BMR will not necessarily result in exactly 1 pound lost per week – it could be less, or it could be more!
Sugar & other fast acting carbohydrates spike your blood sugar level, which in turn leads to your blood sugar level later crashing & thus making you hungry again sooner. No matter how hard you work out, it is hard to lose body mass if you have metabolic syndrome & are resistant to leptin. You can't outrun your fork & it is hard to get your fork under control if you are leptin resistant.
I wish I could read a friggin' diet book without being beaten over the head with someone's politics. But remember, to left-wingers like Zinczenko, liberalism is their religion and they couldn't write a book without mentioning it any more than, say, a devout Christian could write a book without injecting their faith in Jesus Christ. Therefore, we get praise for her majesty Michelle Obama, while the the author rips Rush Limbaugh for daring to critisise her lecturing America about our diets. But he doesn't stop there. He has to ridicule Rush for his painkiller addiction, tying it to the book by saying it was linked to his back pain, which was caused by his being overweight, which means he shouldn't have dared question the first lady. Got that? If that's not enough, he also praises the lady who sued McDonald's for "making her fat", which goes agains the self-help/personal responsibility that books like this are supposed to be about. If you are a hefty lefty, then this is your diet book. Buy it to file next to your Michael Moore and Al Franken comic books. Everyone else should avoid.
 Fryar CD, Carroll MD, and Ogden CL. Prevalence of overweight, obesity, and extreme obesity among adults aged 20 and over: United States, 1960–1962 through 2013–2014. National Center for Health Statistics. Health E-Stats. https://www.cdc.gov/nchs/data/hestat/obesity_adult_13_14/obesity_adult_13_14.pdf. (PDF, 341 KB) Published July 2016. Accessed July 6, 2017.
Sound complicated? Let's use an example to explain. Let's say that you are a sedentary woman. That means that you don't exercise on a regular basis. The weight loss calculator may say that you need to eat 1,200 calories per day to lose weight. But you don't think that you can cut enough food from your diet to reach that number. That's OK. You can simply add exercise to your weekly routine to account for a few extra calories.