I am a 19 year old college student. I am only 5'8 and I went into college very skinny(115-120 pounds). However, when I went to college I began going to the gym daily, eating healthy, running, doing martial arts, and playing basketball. I noticed that my metabolism sped up and I needed to eat like 4-5 times a day. Typically my day would be: Cereal in morning, turkey foot long sub on wheat for lunch, random dinner, then buffalo wings at night, possible cereal a little after that(I was awake from 11 AM -2 AM, i had a good schedule). I gained like 15-20 pounds but it was all good weight. I noticed myself getting more toned, more veins, and a good midsection.

Now that I am back home I lost 10 pounds(I am down to 120-125) and cannot gain! I still eat 4-5 times a day but I can't keep it on. I am not running or playing ball or anything either. I do boxing and martial art work like 2 times a week and weight train 2 times a week. I can't gain weight. I have even begun eating McDonalds once a week on occasions to try to cheat and get some weight on but it just won't stick!

What should I do!!?? I can't be 20 and be 120 pounds. Ideally I want to be 140-150 but it's really really hard for me.

Figure out your BMR by googling it. Then start counting calories.

yeah, you just have to eat more..

Just eat every 2 hours and eat a lot, 4-5 times per day isn't very many IMO. I eat about 8 times per day.

I eat full meals. Two servings of cereal, then Turkey sandwich with fruit, Dinner with portions, chicken cutlets and/or fruit at night, probably another random meal throughout the day. I am eating a lot. I don't want to force myself to eat if I am not hungry(but I am hungry and have to eat like every three hours).

It doesn't sound lik you eat much, it's as simple as that. Try adding some liquid calories like milkshakes into your diet 2 or 3 times a day

you might think you eat a lot...but if you're not gaining weight, you're simply NOT EATING ENOUGH.

setup a fitday.com account and start tracking what you eat.

Is that all your eating through the day? Fact is you have to learn to eat. This means forcing the body to be uncomfortable at times.

then what more should i be eating and how often? i wake up eat, eat 2-3 hrs later, eat 3-4 hours later, then eat again 3-4 hours later?

Can we see what your workouts look like?

You have to give your body a reason to hang on to weight...eating alone will not cut it...you need to lift and you need to lift heavy enough so it will kick your ass...then your body will produce mass.

Give us a breakdown of what you do in a weight lifting session and boxing/martial arts class.

This isn't completely accurate. your training may give your body reason to hold on to MUSCLE, but not mass. If he's having a problem gaining weight all together (fat and/or muscle) then the problem lies in what hes (not) eating.

Seyz, I can tell you now that you need to eat tons of food for you to make noticable gains. I eat anywhere from 2500 to 3000 calories a day just to maintain; granted, I do have 50lbs on ya. Obviously your metabolism is flying, so all that means is you need to overcome that with MORE CALORIES. Eating healthy is good and all, but you may need to more calorie dense (read: "lots of fat") foods to get the calories you need.

I promise you, you CAN gain weight, you just may need to resort to chugging olive oil, maltodextrin and whey *puke*

I have been trying to eat more "unhealthy" food like candy bars, big macks, pizza, but i can't endulge myself in a ton of that. McDonalds maybe once a week and a slice of pizza here and there is as much I can do.

Do you think adding more beef to my diet can help? I love hamburgers and tacos and steak sandwiches, should I add more of that kind of stuff to my diet maybe like 5-6 times a week compared to 2-3? I normally prefer chicken also like chicken cutlets, grilled chicken, chicken teriyaki, turkey.

Fast food may be calorie dense, but it is typically unhealthy in other ways (e.g. trans-fat that is bad for your arteries). Beef and other meats are also calorie dense, but note that beef fat is more saturated than that of most other meats, which may be a concern if your blood cholesterol levels are bad (have you had them checked?). Also, if you are trying to build muscle, be sure that the meat has decent amounts of protein, since very fatty meat like bacon, hot dogs, pepperoni, and many sausages may have less protein than you think.

For snacks, you can also add nuts and dried fruit (or "trail mixes"), which are calorie dense, but otherwise healthy. Adding avocados and nuts to your meals may also help. And liquids like fruit juices and milk / protein powder shakes can get calories in relatively easily.

I meant muscles when I used mass...the context made it clear...or so I thought.

lol, can I puke now or after I taste it?

Add a gallon of milk to your daily diet. 2400 calories and 130 gr of protein. I went from 130 to 175 in 3 months. That is the truth and the gallon of milk help do it. Drink a 16 oz of milk after every meal atleast. You will gain in no time at all. Go a month before you start working out though. Let it start to stick to your bones abit then start a low rep heavy weight workout to turn to muscle.You will gain.

Not a problem. I rarely eat pork and I often eat trail mix. I will try adding some avocado too. I haven't had my blood cholesterol levels checked but I am pretty sure they are more than fine.

Is it possible to gain weight but not gain SO much fat. I mean my midsection looks pretty good right now and I was wondering if I can try to keep that in tact any way?