Diet is very important along with nutrient timing. But in this case I am wondering why David is lifting after 1 hour cardio? It makes no sense to me for two reasons: First, after one hour cardio probably every person (if you are not an advanced endurance athlete) does not feel very strong while lifting, because you are TIRED. Second, the glucose stores are probably depleted and body is using oxidative systems to produce energy, which is pretty slow. Add diabetes into the equation, and the workout can feel like a complete failure.
I would suggest to flip the order of the workout (weights first and cardio at the end).
Or am I missing something here???
Let me know.

Thanks