It's just that keeping your heart rate in the target range during regular aerobic exercise has been shown to be safe and effective for increasing your aerobic fitness. Exercising above this range can be very uncomfortable and may increase your risk of injury.
Typical daily weight gains for feedlot animals ranges between 0.5kg to 2.5kg per day, while grass fed animals are somewhat lower than this. The following data was collected from a small beef cattle company in Dallarnil in Queensland (approximately 300km north of Brisbane).
Diet is the most important factor when it comes to losing weight, but is often overlooked. To lose weight from your legs and calves, you need to consume fewer calories than you burn on a daily basis. The USDA recommends that women consume 1800 to 2400 calories per day, and men consume 2000 to 3000 calories. Start in the middle of these figures, and adjust your intake in accordance with progress.