QUOTE (Kailin @ Nov 18 2009, 01:09 AM)

I'm one hundred pounds and I am between the ages of 20-30 years old. and the most exercise I get is going up one flight of stairs
Typical weekday
pretzels+tea or coffee for breakfast
sandwich (mostly bread + lunch meat) or burger+fries + fruit for lunch
rice+meat+some veggies or noodles+pork for dinner + fruit
frozen french bread pizza or pretzels+spinach dip or waffles+jelly or instant noodles at midnight
Weekends vary.
Haha okay, well I've never dealt with someone trying to gain weight that's not solely based on building muscle.
Pretzels = great snack if you're trying to stay skinny or lose weight...not so much if you're looking to pack it on.
Plain and simple, up your breakfast. Switch to a bagel, or eggs, or instant oatmeal...anything with actual calories.
For your fruits, switch those in between your breakfast, lunch, and dinner...and I would personally recommend yogurt or snack bars...a little more substance.
What I use to do was eat breakfast bars with a banana or yogurt and chopped fruit, switch it up each day so you don't get bored.
The name of the game is to continuously eat through out the day, you're at 4 meals, if you split up some of your meals you can make it 6 easily.
Honestly if you're a hundred lbs. eat whatever you want. If you can I'd start lifting, you'll be amazed once you start seeing results.