If You Were to Jog 1 Km a Few Hours

Question

If you were to jog 1 km a few hours after lunch, which stored fuel would you probably tap?
A) muscle proteins
B) muscle and liver glycogen
C) fat stored in the liver
D) fat stored in adipose tissue
E) blood proteins

Accepted Answer

Jogging 1 km requires energy that can be provided by stored glycogen in the muscles and liver. Fat stores are not the primary source of energy for short-duration exercise such as jogging, unless there is a prolonged energy deficit. Muscle proteins and blood proteins would not be used as sources of fuel unless the body is in a state of extreme starvation or catabolism.