If a person hears a friend calling for help and goes running to find out what the friend needs, the person would be getting his/her energy from

### Glycogen via anaerobic glycolysis

## Step1: Identify the energy source### When a person runs, the body needs to produce energy quickly. The primary source of energy for high-intensity, short-duration activities is glycogen stored in the muscles.## Step2: Determine the metabolic pathway### The metabolic pathway that converts glycogen to glucose for energy in the absence of oxygen is known as anaerobic glycolysis.## Step3: Connect the metabolic pathway to the activity### Running to find a friend in need is a high-intensity, short-duration activity, which relies on anaerobic glycolysis for energy.