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.
If you have gained weight over time, it is because on average you are eating more calories than your body burns off. Extra calories add up over time and will turn into extra pounds. One pound is equal to 3,500 calories. So, if you want to lose 1 pound per week, you would need to cut 500 calories from the calories that you usually eat in a day.