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.
You need to burn 3500 calories a day to lose a pound. A human burns about 2000 a day on average. If you eat 1500 calories a day, you're burning about 500 a day without changing your routine. Which means you have to burn 3000 more calories that day to lose a pound. Not impossible but very difficult. Aerobic workouts like Richard Simmons (don't laugh.