Acceptable Protein Sources

 Beef (steak, ground beef, etc)
 Cottage Cheese
 Deer/Venison
 Eggs (whole or whites)
 Finfish (salmon, tilapia, haddock, mackerel, tuna, bluefish, herring, etc)
 Ham (fresh)
 Lamb
 Milk protein powders (whey and/or casein)
 Pork (tenderloin, chop, etc)
 Shellfish (scallops, shrimp, clams, oysters, crab, lobster, etc)
 Skinless Chicken (breast, thigh, wing, etc)
 Turkey breast

Is Protein X is harmful in anyway.. I have heard that once you stop eating protein your body start to expand and gain weight..

protein as a nutrient is not harmful.. excess protein without proper hydration has the potential to lead to kidney problems in some people but as long as you consume 1 litre of water for every 100 grams of protein consumed to break down the proteins you should not experience any problems at all, generally people who experience trouble with protein intake already have an underlying condition. the only way i could see anyone blowing up from reducing protein is if they were eating copious amounts of carbs and bad fats. eat, hydrate, take in good quality proteins and essential fats along with good carbs keeping fast burning carbs for straight after workout and you will be fine. if you are looking to bulk take in between 1 - 1.5 grams protein per pound of "lean" bodyweight. too many people make the mistake of taking protein based on their overall bodyweight. you need to find out your fat percentage and deduct that from your weight before calculating proteins and carbs. i hope this helps and look forward to communicating further.