I have really annoying problem. I've been trying to gain weight since april My coach said that i had to hit 68+kg til now.I was 15,not very high(183cm),and weight only 61kg.Howeva i didn't look really skinny because of my shoulders.So I started trying diets (protein diet/warrior's diet etc.)and til the end of July i hit 63 kilograms :\ .4 DAYS AGO i got sick! Now I weight 59 KILOGRAMS!!!How is it even possible to lose 4 kilograms for 4 days :O ? I do my diets right and I just cant believe why cant I get 68 kilograms... am I just DOIN IT WRONG ???

Just eat more carbs. Proteins are good for muscle building but you have to work the muscles to increase their size. Swimming is great for losing weight as it is a cardio exercise, so if you are swimming then you need to eat more carbs and proteins to balance out the carbs you are burning as a result of swimming. Also try hitting the weights to build up muscle. Carbs will bulk you up but they usually result in more fat. But this can help if you are swimming because your body will burn the extra fat and carbs. The key if you are doing cardio like swimming or running or biking is to eat a lot more carbs than you normally do in order to maintain or gain weight.

Darden - Does anyone own any Family Leisure pools?

Have you ever tried taking protein supplements like serious mass?

i'd say eat more carbs and more calories,
probably research how to gain some weight.

also try weight gainer supps, but i'd recommend diet first.

Eat at least 6 meals a day. And keep up the protein!

good luck!