Eat less and exercise more. I once lost eight pounds in seven days. One steamed bun in the morning, one at noon and one at night. If you eat fruits and vegetables at night, you don't eat steamed bread. You run for 40 minutes at night, and leg press needs 10 minutes. If you want to be quick, you should exercise sooner or later! After all, it's still useful to shut up and take your legs. Just make sure you eat carbohydrates, protein and vitamins every day.