Concrete and cement are not interchangeable terms. Cement is the dry powdered substance that is mixed with sand, gravel and water to create concrete. The gravel component in concrete is sometimes referred to as crushed rock or aggregate. Mixing sand, gravel, water and cement in the right proportion is essential to producing durable, high-quality concrete.
Know the numbers. In order to lose one pound, you will need to burn 3,500 more calories than you consume in a day. How many calories you burn in a given day just by existing will depend on your current weight and level of physical activity. You can calculate this by multiplying your weight by ten.
Common dieting wisdom says that we'll lose one pound for every 3,500 calories we burn. Is that true? The above quoted formula is taken as dieting orthodoxy: to lose one pound of fat per week, simply create a 3,500 calorie deficit through diet and exercise et voila, lose a pound a week for as long as you can keep it up. If only it were that simple. Instead, the 3,500 fewer-calories-per-week strategy (what amounts to 500 fewer calories per day) is a good guideline to help create a calorie deficit, but that doesn't mean it will result in one pound lost every seven days.