[PJ]

I had this problem too. I would eat and eat and eat, lift, lift, and lift, and I wouldn't gain weight.

After lots of reading and researching, I developed my own little plan.

I knew there was no way for me to gain weight eating regular food and protein. I had to take a gainer. I went and bought the biggest gainer I could find, which was 17 pounds of Mutant Mass from Reflex Nutrition. Took 1-3 shakes a day, upped all my meals, and I generally just tried to eat more solid foods constantly. I personally disagree with some people saying cut out cardio and veggies, because without them, all that mass from the extra food/supplements will be stored as fat in the wrong places, and veggies help your body absorb more protein. That's why you see some skinny people that have a bit of a beer belly.

I went from doing cardio 3-4 times a week to 1-2. Also I shortened my gym sessions from an 60-90 minutes to 30-45 minutes. Lowered my reps, increased weights, increased break times. Keep in mind that you will gain a bit of body fat depending on your diet and workout, but that's inevitable if you're looking to put on size.