Why is it so hard to gain weight?

Every body is different, either it's very easy или not really. It could be your metabolism, but the best person Ты could probably ask is your doctor. I, myself, find it very difficult to actually lose weight. It was easy to put the weight on but that's just my body. As I said, every body is different.

I know this might sound pain in the ass, but Ты need to start weighing your Еда depending on your weight. Ты do want the healthiest way possible right? not just gain fat..

I'd advise Ты to add еще protein shakes and I'm not talking about the powder, fuck that^^ just make it yourself at home.

There can be some factors that might make Ты underweight e.g. smoking, having too little sleep, work out routine that targets wrong areas, eating unhealthy или any other thing that messes up metabolism. But it also might be simply genetics and then there's little Ты can do about it. Hopefully Ты find a solution that works for you!

There’s a massive tapeworm inside your digestive track that steals all the calories and nutrients from all the Еда Ты eat by consuming the remaining Еда particles that travel throughout

It's called McDonald's. They'll fatten Ты up in no time