iv heard it 1000 times but the truth is you DO NOT eat enough.if your naturaly skinny or have a high metabolism you just have to eat more than most people would but the food is the key.
did you know that even if you manage to gain weight on cycle that if you do not up your calories and keep them up you will lose your gains when you come off cycle.the more you weigh = the more calories you need every day just to maintain your weight.no excuses about why your skinny will change that fact.