ROB, I'm 5' 7", 130 lbs and I can't gain weight even when I eat 3,500 calories which is 1500 calories above my recommendation. I eat 60-70% of my calories from fat, mostly saturated fat. I find most of the gainers here are lacto-paleo. When they drink raw dairy products their muscles benefit from the growth factor (IGF) in dairy. All dairy is not created equal of course. Raw milk from grass-fed goats is most similar to human breast milk and therefore is the gold standard (IMHO) if you want to be lacto-Paleo. Supermarket milk, even if it's organic, is primarily from A1 cows with a mutated gene that produce a casein protein that is difficult for us to digest. A2 is the original gene but only 10% of cows in the US are A2. All goats are A2. A grass fed diet will lower omega 6 seed oils that you might find in feed. Raw goat's milk will preserve enzymes that make it easier to absorb and digest the nutrients and vitamins in the milk. Pasteurization cooks up and kills enzymes that we need to digest dairy. Another source of growth factor that will accelerate muscle growth and mass gain is Blue Bonnet whey protein powder made from grass-fed A2 cows pastured in New Zealand. Their heating process uses a lower temperature and preserves enzymes and immunoglobins inherent in the milk. Right now I'm 130 but I'm the 12th strongest bench presser for my weight class in the US (unofficially). I'm training and targeting a lift that would make me the 6th strongest bench presser in my class in US history. What's my point? My point is, when you are Paleo your body is as it should be; agile, flexible, mobile and strong. We are engineered for endurance and stamina over clunkiness, bulk and mass. So I say, just try to be the best 130 you can be. Women have no complaints about my body. Lots of them want to touch me...which is cool.

ROB, I'm 5' 7", 130 lbs and I can't gain weight even when I eat 3,500 calories which is 1500 calories above my recommendation. I eat 60-70% of my calories from fat, mostly saturated fat. I find most of the gainers here are lacto-paleo. When they drink raw dairy products their muscles benefit from the growth factor in dairy. All dairy is not created equal of course. Raw milk from grass-fed goats is most similar to human breast milk. Supermarket milk, even if it's organic, is primarily from A1 cows with a mutated gene that produce a casein protein that is difficult for us to digest. A2 is the original gene but only 10% of cows in the US are A2. All goats are A2. A grass fed diet will lower omega 6 seed oils that you might find in feed. Raw goat's milk will preserve enzymes that make it easier to absorb and digest the nutrients and vitamins in the milk. Pasteurization cooks up and kills enzymes that we need to digest dairy. Another source of growth factor that will accelerate muscle growth and mass gain is Blue Bonnet whey protein powder made from grass-fed A2 cows pastured in New Zealand. Their heating process uses a lower temperature and preserves enzymes and immunoglobins inherent in the milk. Right now I'm 130 but I'm the 12th strongest bench presser for my weight class in the US (unofficially). I'm training and targeting a lift that would make me the 6th strongest bench presser in my class in US history. What's my point? My point is, when you are Paleo your body is as it should be; agile, flexible, mobile and strong. We are engineered for endurance and stamina over clunkiness, bulk and mass. So I say, just try to be the best 130 you can be. Women have no complaints about my body. Lots of them want to touch me...which is cool.