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.
Depends how many calories you are eating! To lose one pound, you must burn off 3,500 more calories than you eat. So, if you eat 2,000 calories per day for 7 days, that's 14,000 calories per week. To lose a pound, you must do enough exercise to burn 17,500 calories per week.