Here’s some simple math that many people still can’t seem to grasp. You’re in the gym for only an hour or so each day, leaving another 22–23 hours in which muscle growth depends solely on what goes in—or stays out of—your piehole. So why is the nutrition side of the mass-gaining equation often marginalized? It’s probably because a bench press is a lot sexier than a spinach salad.
But if you want to take your physique from string bean to Mr. Clean, certain dietary principles need your utmost attention. These 12 get-big eating tips will help you build the body you’ve always yearned for without blowing up like the Pillsbury Doughboy.
1 OF 13

Claudia Totir / Getty
Eat Real Food
To quote America’s foremost food writer, Michael Pollan, “Don’t eat anything your grandmother wouldn’t recognize as food.” Protein powders notwithstanding, this is great advice. Whole foods like lean meats, nuts, seeds, and vegetables contain more of the nutrients muscles crave, and deliver a steadier supply of amino acids and blood glucose to muscles than the nutritional dreck found in the middle aisles of your local supermarket.
2 OF 13

Carlo A / Getty
Rise & Dine
When trying to gain mass, eat two breakfasts. To restock liver glycogen and put the brakes on the catabolism that chips away at your muscle overnight, down two scoops of whey protein along with a fast-digesting carb such as Vitargo or white bread immediately upon waking. One of our favorite morning shakes is two cups of coffee, two scoops of whey, and two to three tablespoons of sugar. About 60 minutes later, follow up with a wholefoods breakfast that boasts quality protein—such as Canadian bacon or eggs—and slowerburning carbs, such as oatmeal.
3 OF 13

cipella / Getty
Track Your Intake
The only way you’ll know if you’re eating enough in the right proportions to grow muscle is to keep a detailed food diary, and tally your calories and macronutrients. The huge database of foods at nutritiondata.com can help you crunch the numbers.
4 OF 13

Rob Lawson / Getty
Get Your Game On
Game meat used to be a big part of the American dinner—bring it back. Bison, elk, ostrich, and venison are among the best muscle-building foods. Besides having a superior protein-to-fat ratio that helps pack on lean mass, most game is grass fed and has plenty of room to roam. This produces more fat-burning omega-3s and conjugated linoleic acid. Look for game meat at farmers’ markets or order at eatwild.com. Also, keep an eye out for game meat jerky, a stellar, protein-packed snack option.
5 OF 13

magnez2
Eat Whey Protein Before and After Workouts
In a study published in the journal Amino Acids, Finnish scientists discovered that weightlifters who consumed whey protein before and immediately after workouts produced more of a compound called cyclin-dependent kinase 2, or CDK2, than those who didn’t take whey. CDK2 is believed to activate muscle stem cells involved in hypertrophy and recovery from intense training. In addition, a 2009 study by Japanese researchers found that consuming whey and glucose prompted larger stores of post-training muscle glycogen (the main energy source for working muscles) than ingesting just glucose. Shoot for 20–30g of fast-digesting whey protein isolate or hydrolysate 30 minutes pre-workout and immediately post-workout.
6 OF 13

Sam Barnes / Getty
Don’t Shun Carbs
To gain mass, you must eat plenty of carbohydrates: 2-3g per pound of body weight. Carbs contain the calories required for growth, and glycogen to fuel intense lifting. Good options for most meals are brown rice, oatmeal, quinoa, and sweet potatoes. However, in your first meal of the day and your post-workout snack—when an insulin spike is needed to channel amino acids into muscles—you want fast-digesting carbs such as fruit, white potatoes, or white rice.
7 OF 13

LauriPatterson / Getty
Plan Ahead
Coming home ravenous after a ballsout training session and having nothing ready to eat can send you on a hunt for the nearest bag of Doritos. But having a stockpile of protein-packed foods that can be reheated easily guarantees you’ll make healthy choices and get the nutrients your muscles need. Use the weekend to rustle up big batches of chicken, chili, stews, hard-boiled eggs, and rice, which will keep in the fridge or freezer the whole week.
8 OF 13

Westend61 / Getty
Munch Before Bed
Before hitting the sack, snack on a combination of slow-digesting casein protein and healthy fat. Casein coagulates in the gut, ensuring a steady supply of amino acids to slow catabolism as you sleep. About 30 minutes before bedtime, have 20–40g of casein protein powder or one cup of unsweetened low-fat cottage cheese (a stellar casein source) mixed with two tablespoons of flaxseed oil or one to two ounces of nuts or seeds.
9 OF 13

Brian Klutch / M+F Magazine
Schedule Frequent Noshing
Eating often will keep you satiated and give your muscles the constant stream of nutrients they need to grow. Not only are hunger pangs a sign that your body may have entered a catabolic state, but when you’re starving you’re more likely to OD on leftover birthday cake at the office. Try to consume eight physique-friendly meals or snacks throughout the day, including your pre-and post-workout fare.
10 OF 13

vgajic / Getty
Eat Enough Calories
Muscle, unlike flab, is a metabolically active tissue, and you need to put away plenty of calories to keep it growing. Eat too few calories and you’ll whittle it away. When mass gain is the goal, aim to consume about 20 calories per pound of body weight each day (about 3,600 calories for a 180-pound guy). If you find that 20 calories per pound packs on mass and fat, drop to 16–18 calories. But this doesn’t mean you’ve got the green light to pound pizza. Quality matters too, so keep it clean.
11 OF 13

Westend61 / Getty
Face the Facts
Fat, including the much-maligned saturated fat, is necessary for building a rock-solid physique. It revs up testosterone production, provides necessary calories, and helps your joints endure the heavy lifting needed to spur muscle gains. Aim for at least 0.5g of fat per pound of body weight (90g for a 180-pound man), or 30% of your total daily calories. Divide that into equal thirds from saturated fats found in beef, coconut products, and dairy; monounsaturated fats from almonds, avocado, olive oil, and peanut butter; and fat-burning polyunsaturated fats found in fatty fish, flaxseeds, hemp seeds, and walnuts. Avoid the trans-fatty acids found in fried foods.
12 OF 13

Westend61 / Getty
Pack in Protein
Protein provides the amino acids used to build muscle. Shoot for 1–1.5g of protein per pound of body weight, or 180–270g a day for a 180-pounder. Top protein picks include dairy, eggs, poultry, red meat, and seafood. These foods offer a wealth of complete protein, providing your muscles with the aminos necessary for recovery and growth. You may supplement with whey, casein, and soy protein powders as well. And don’t overlook plant-based protein sources such as quinoa, beans, and hemp seeds.
13 OF 13

MRBIG_PHOTOGRAPHY / Getty
Mass-Gain Meal Plan
Breakfast 1
2 scoops whey protein
2 cups coffee
2–3 tbsp sugar
Breakfast 2
3 large eggs
2 cups oatmeal
Midmorning Snack
8 oz plain 2% Greek
yogurt
½ cup blueberries
¼ cup walnuts
Lunch
6 oz. bison sirloin steak
2 medium wholewheat
tortillas
½ cup salsa
2 cups multicolored
green salad
1 tbsp oil and
vinegar dressing
Pre-workout
1 scoop whey protein
1 scoop casein
protein
1 cup cherries
12 oz water
Post-workout
1 scoop whey protein
1 scoop casein
protein
1 cup fat-free milk
2 slices white bread
1 tbsp jelly
Dinner
6 oz rainbow trout
1½ cups quinoa
1 cup broccoli
Bedtime Snack
1 cup 1% cottage
cheese
2 tsp flaxseed oil
Daily Totals
3,745 calories
341g protein
368g carbs
109g fat
NOTE: Mix all protein powders according to directions on label.