On: Ask HN: How do you gain weight?

[_dt47]

Exercise, you don´t need fat, you need muscle.

[jetti → _dt47]

You still need to gain weight in order to build muscle. Muscle development requires a caloric surplus.

[EpicEng → _dt47]

It's both. Putting on muscle is 80% diet, a fact people often ignore and then wonder why they're not getting stronger.