Don't take diet pills. Diet pills are harmful to your health. As long as you eat breakfast and lunch every day, there will be side effects, from two hours after a meal to the next meal, from two hours after a meal to bedtime, jogging or walking at the speed of crossing the road for 30 minutes. Try to eat less dinner. Don't eat too much for the other two meals. It is best to feel hungry 30 minutes before the next meal (be sure to feel hungry) 10. Stick to it and you can lose weight.