How long till the extra calories becomes noticalbe fat?!

How long till the extra calories becomes noticalbe fat?

I need to gian 17lbs im underweight, and i was wondering how much fat will be added onto my body, like stomach or pant sizes. How many pounds does it take to notice a difference in your body apperence if you eat ok healthy wise, and lift weights, bend down and touch your toes really fast, and do sit-ups everyday? Do you think at the end i will appear really FAT or just a little meat since i exercise

Calories that are not used right away for energy are almost immediately converted to and stored as fat. If you need to gain weight and want to be healthy about it - I would recommend carb-loading and lots of protiens, and of course reasonable amounts of excersizes. If you just want to gain fat, pretty much eat everything that tastes like the Devil and watch a lot of Daytime network television, and you'll be set in no time =)