The phrase “I can’t gain weight” is being said by every skinny guy nowadays. The solution is simple AF. The usual excuse usually is “I have a fast metabolism”. Yes, that is one of the reasons why they are skinny. But what is the actual meaning of having a fast metabolism? That means that the metabolism of that person burns more calories than the average person. Which means, to gain a weight, the person with fast metabolism needs to eat more than the other people, so he can gain weight. And…