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.
To lose weight safely, you should try to eat 500 to 1,000 fewer calories than usual. One pound equals roughly 3,500 calories. So, if you eat 500 fewer calories each day, you should lose one pound by week's end. Burning calories through exercise has the same effect. So by combining reducing calories with moderate exercise, you should be able to drop 1 to 2 pounds per week. Going much lower on your calorie count can be dangerous.