Re: Gain weight
Go for Herbalife's products, if he want to gain weight the healthy way. Or start having a large glass of banana shake with one or two parathe every morning. Drink a couple of glasses of water after this. And of course move a little else all he'll get is a huge tummy.
I use one banana, half a glass of milk and one full glass vanilla ice, blend it.
Try cheese paratha with butter instead of regular once.
I serve this to my bro, who's masha Allah very well built, just when I think he's getting lazy I motivate him to move :o