Intense exercise caused a rapid reduction in the concentration of muscle glycogen in schedules B and C.
Explain why this happened.


B= normal balanced diet until 5 days before race weight training and 17 mile run on day 5 before race high carbohydrate diet for 4 days before race


C=normal balanced diet until 7 days before race weight training and 17 mile run 7 days before race
high protein and fat diet; low carbohydrate 6–3 days before race
high carbohydrate diet for 2 days before race