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.
Reduce your caloric intake. To lose a pound a day, you should consume between 800 and 1,200 calories a day depending on your weight and how much you exercise. You can cut down on calories by both eating smaller portions and by eating healthier foods. 1  Eat low-calorie foods that fill you up.