How to gain some fat?

I am having alot of trouble putting on a little bit of weight. I want to be a bit chubbier (I think the softness feels better). I would like to put on 20 pounds by the end of the year, but nothing seems to work anymore. I tried all summer to gain a bit, but i got sick and in 5 days lost 10 pounds (all of my summers gain!). I ride my bike about 30 miles a week and I do tons of push ups and pull ups so I am quite fit. My fitness wont change with me gaining weight either.Right now I am 225 and about 6'4 Is there anything I can do to gain some weight or slow down my metabolism at least?

How to Lose Weight Drinking Milk

Recommended Answer:

very easy ! eat a lot of calorie-rich food at night before you sleep. I've gained a lot of weight which i did not expected eating too much food at night , i can not control myself to stop eating that much. i'm so sorry about that! I wanna lose wight,harder that gain weight.

Other Answers:

• Peanut butter is a nice calorie dense food thats good for underweight people. Also eat lots of meats, carbs, and fats. Dont eat to unhealthily though, its bad for you. Eat your fruits and veggies. I wouldnt stop working out but i think the biking can go. all that exercise is making your metabolism really high. just work out so your muscles stay toned, but dont get to carried away with the exercising.
• Drink protein shakes. They are designed for body builders who want to bulk up a little. they come in many delicious flavours such as cookies&cream or vanilla. You could also put them in a fruit smoothie @ break fast. The most effective kind is 'Whey Protein' you can get them here: http://www.hollandandbarrett.com/pages/categories.asp?cid=141&searchterm=whey%20protein&rdcnt=