The pre-training meal may just be the most important meal of the day. This is the meal that will fuel your workout. For this meal it is important to get protein and carbs which will make their way into the blood stream around the time your training session is getting underway. The glucose in the bloodstream from the carbs will be used for energy, while the amino acids from the protein will spare stored amino acids from being catabolized during training.
I'm more toned and I can pull my skin away from my muscle (whereas before it was fat). I love that I DO workout hard, but it's not the kind of hard that I used to do, where you work out until you want to throw up, or can't sit down for 2 days because you're so sore. I couldn't do that in this stage of life so this program really works for me. I was able to jog (and I HATE running) the other day, because I had the energy and the muscle strength to support that kind of movement. The only negative thing about this program is that I have to buy a ton of new clothes!! :-)
Carbohydrates also regulate muscle cell volume. You will notice that when carb intake is low your muscles will appear flat and smaller, because cell volume is diminished when carbs are restricted. This is because carbs are stored in muscle tissue as glycogen. Every gram of glycogen is stored with 2.7 grams of water. This can drastically effect the size of muscle cells.
This may explain why the fat-burning effects of eating more protein were confirmed in a study published in the American Journal of Physiology. One group was fed a high-protein diet (just over 1 gram per pound of body weight per day) while the second group consumed an amount closer to the lower recommendation of the RDA (recommended dietary allowance). The group eating the higher-protein diet burned the most fat.