Question: how long would you have to workout for using weights to lose 500 calories?
Answer: Running on a treadmill at a 10:00-per-mile pace for 45 minutes burns approximately 500 calories for a 140-pound person. If you then go home and eat two slices of a fourteen-inch, regular crust pepperoni pizza, you'll consume 596 calories. Train for 45 minutes and ruin that with ten minutes of pizza eating.