I'm your height, cycle a lot, and am about 225 currently. For me around 210 I had to move from drop handlebars to a more upright bike to give my belly more room, but otherwise I do fine for bike commuting. So I don't really see a problem there.
Healthiest gain takes time, and is basically just more of all the god stuf. But if you don't mind abusing your blood sugar, I think pop tarts are the highest calories for money, eating time, and convenience. A box of eight is 1600 calories, available at corner stores, fits in a back pack, and you can knock back abtart or two any time you have a quiet minute.
12 years
