Starches provide you with an extra boost of energy during your workouts. <span>Starches will eventually break down into glucose, which your body's main fuel source.</span>
Answer:
Target heart rate is generally expressed as a percentage (usually between 50 percent and 85 percent) of your maximum safe heart rate. The maximum rate is based on your age, as subtracted from 220. At an 85 percent level of exertion, your target would be 145 beats per minute.
