I'm a 27 year old guy, 160 lbs, 5'10. I've been working on bulking up for the last week or two, gained about 10 lbs already, which I'm happy with(not hard to do when I was so skinny).
I've been aiming for between 3500-4000 calories per day, a shake or two on off days and 3 shakes as outlined on the Nutrient Timing article by Daniel Roberts, and the rest in complex carbs, meat, eggs, etc. I take about a teaspoon of creatine monohydrate per day as well. And I'm drinking several litres of water. The only other supplements I take are a multi-vitamin and a omega-3 fish oil capsule.
So to get to the point, I'm not really used to eating so much food throughout the day, and after eating I feel pretty lethargic and have to resist the urge to take a nap. This happens whether I consume three big meals or several smaller meals throughout the day.
I realize that this may change as my body adjusts to eating more, but I'm just wondering if any of you people have suggestions on what I can do to boost my energy levels. I'd prefer not to spend tonnes of cash on more supplements.