Fil, you have some good points but...
After 40 minutes of aerobic activity, glucose uptake increases 7 to 20 times the uptake at rest, depending on exercise intensity. After 20 minutes, liver and muscle glycogen provide about 40 to 50% of the energy requirement, with the remaining requirement from fat breakdown plus some blood glucose utilization.
Sooo...if she's going to be doing aerobic activity every day, I'd suggest that her diet consist of 60% carbs, 25% fat, and 15% protein.
However, I might go for a middle ground-3 days of aerobic activity (45 minutes) and 2 days of
HIIT (20-25 minutes) to increase EPOC which will provide a greater fat burning environment.
