A person who continues to exercise moderately for more than 20 minutes begins to use less glucose and more fat for fuel.
Step-by-step explanation:
When a person engages in moderate intensity exercise, the blood glucose levels are balanced due to the rise in hepatic glucose production and this stabilizes the blood glucose level. There is also a decrease in insulin level which activates the liver to glucagon and thereby increasing the production of glucose.
Catecholamine increase glucose production and store it as a source of energy for athletes who runs a marathon. It is also associated with lower risks of diabetes and increase hormonal balance in the body.