Research Suggests That Protein May Be a Significant Source of Energy

Research suggests that protein may be a significant source of energy during

A) strenuous weight training and accounts for up to 15 percent of the total energy cost.
B) brief sessions of high-intensity exercise.
C) the latter stage of prolonged endurance exercise, when protein could contribute up to 15 percent of the total energy cost.
D) times when the body stores of glycogen and glucose are adequate.