A popular topic in modern sport science has been post-training nutrition and its effect on performance. However, more recent research has focused on pre- and intra-workout nutrition as well, and the results could improve the outcome of any training regimen.
For intra workout nutrition, the consumption of 6g of EEA with 35g of CHO, independent of the pre-workout meal, presents several major benefits: a greater decrease in Cortisol; the greatest effect on Insulin release post exercise; the greatest effect on Testosterone release during exercise; and the greatest decrease in Muscle Protein Breakdown up to 48 hours post exercise. It also boosts the anabolic effect of resistance training to greater extent vs. CHO or EEA independently (Byrd et al 2006).
Bottom line: If you are participating in any high intensity sport or exercise, proper nutrition before and during your workout will greatly increase the success of your program.