行樓梯.個臂部係唔係會大嫁.

I think you meant your hip instead your arms, right? No, your hip won't get bigger, the leg muscle may build up by walking up stairs, but it will only make you legs look firmer, they won't get bigger, needless to say that your hip won't get bigger neither if you workout reasonably.

行樓梯只會令你個pat線條靚d, 摸落彈手d, 睇落性感d,
遠離豪華團~
如果你成日冇運動, 坐足成日都唔行下走下,
個pat就真係會大la~