If you are interested in trying to lose weight, try to burn a certain number of calories each week. f you are able to only do cardiovascular exercise 2 times a week, work hard to try to burn 300 calories per workout. If you are able to make it in more times per week, you can drop your calories back a little. 3500 calories equals 1 pound of fat. In combination with a healthy diet, you can try to lose weight the healthy way, 1-2 pounds a week.