Hello,
I'm skinny person.. Weight : 44 - 45.5 kgs Height : around 162-163 cm Age : 21(this year)

i'm a lazy boy, less eat and drink also shower, more on playing and watch TV.

My body has hi metabolism(very fast sweat) and I have a mass gainer(Inner Armour choco fav.) but rarely to use it because busy of work, play etc.

So, how to make my body weights up and build body more muscular?

So, I need some motivation....May be I'm hopeless but I must make something