[brigadier132]

> In every case, when I watched them closely, I realized they barely ate anything

I know people (mainly Asian guys that are trying to build muscle) that seriously struggle to eat at a calorie surplus. So maybe it's not "metabolism" (which there are significant differences between humans) but also differing levels of hunger.

[stanford_labrat]

There is a biological feedback loop that dictates how hungry you are via hormones such as ghrelin and leptin.

My little brother is about 50lbs lighter than me at the same height and we have very different builds and all his attempts to bulk fail for the same reason: no appetite. Meanwhile I’m overshooting my bulks and have to cut harder because I love eating too much.

[username135]

Eating enough food is the most exhausting part of trying to bulk. Its not hours in the gym - thats easy - its calories on the plate.

[ses1984]

Everyone’s different.

[paulpauper]

maybe it mostly goes to the mid section. Having a large stomach but thin limbs can create the illusion of being skinny