Making a nutrition plan comes down to four steps: figuring out how many calories your body needs, dividing those calories among protein, carbs, and fat, choosing nutrient-dense foods to fill those targets, and organizing everything into meals you’ll actually eat. The process is simpler than most people expect, and you don’t need special software or a dietitian to get started.
Calculate Your Daily Calorie Target
Every nutrition plan starts with energy. Your body burns a baseline number of calories just to keep you alive (breathing, circulating blood, maintaining body temperature). This is your basal metabolic rate, or BMR. The most widely used formula for estimating it is the Mifflin-St Jeor equation:
- Men: BMR = 88.362 + (13.397 × weight in kg) + (4.799 × height in cm) − (5.677 × age in years)
- Women: BMR = 447.593 + (9.247 × weight in kg) + (3.098 × height in cm) − (4.330 × age in years)
If you’re more comfortable with pounds and inches, convert first: divide your weight in pounds by 2.2 to get kilograms, and multiply your height in inches by 2.54 to get centimeters.
Your BMR only accounts for what your body burns at rest. To get your total daily energy expenditure, multiply your BMR by a physical activity level (PAL) factor. General population values range from about 1.2 for sedentary lifestyles to 2.5 for very active ones. A practical breakdown:
- Sedentary (desk job, little exercise): BMR × 1.2
- Lightly active (light exercise 1–3 days/week): BMR × 1.375
- Moderately active (exercise 3–5 days/week): BMR × 1.55
- Very active (hard exercise 6–7 days/week): BMR × 1.725
As an example, a 30-year-old woman who weighs 68 kg (150 lbs), stands 165 cm (5’5″), and exercises moderately would have a BMR of roughly 1,420 calories. Multiplied by 1.55, her daily target lands around 2,200 calories. If your goal is weight loss, subtract 300 to 500 calories from that number. If you’re trying to gain muscle, add 250 to 500.
Set Your Protein, Carb, and Fat Targets
Once you have a calorie number, you need to split it among the three macronutrients. Federal dietary guidelines set broad ranges for adults: roughly 45 to 65 percent of calories from carbohydrates, 20 to 35 percent from fat, and 10 to 35 percent from protein. Those ranges are wide on purpose, so you can adjust based on your goals and preferences.
Protein deserves the most attention because it’s the macronutrient people most often undershoot. The baseline recommendation for healthy adults is 0.8 grams per kilogram of body weight per day, but that number is a minimum for sedentary people. If you exercise regularly, the International Society of Sports Nutrition recommends 1.4 to 2.0 grams per kilogram. Endurance athletes typically need 1.0 to 1.6 grams per kilogram, with those training at higher intensities aiming toward the upper end. For someone weighing 75 kg (165 lbs) who lifts weights three times a week, that means roughly 105 to 150 grams of protein per day.
A straightforward starting split for most people is 30 percent protein, 40 percent carbs, and 30 percent fat. On a 2,200-calorie plan, that works out to about 165 grams of protein, 220 grams of carbs, and 73 grams of fat. You can shift these numbers. Someone doing intense endurance training might push carbs higher and drop fat slightly. Someone focused on satiety for weight loss might keep protein at 30 to 35 percent. The key is that the numbers add up to your calorie target.
Choose Nutrient-Dense Foods
Hitting your calorie and macronutrient targets with processed snack bars and white bread is technically possible, but you’d miss out on the vitamins, minerals, and fiber your body needs. A more useful approach is to build your plan around whole foods and treat packaged items as occasional fillers.
Harvard’s Healthy Eating Plate offers a visual shortcut: fill half your plate with vegetables and fruits, a quarter with whole grains, and a quarter with protein. This ratio naturally drives you toward nutrient density without requiring you to track every micronutrient.
For each food group, lean toward the most nutrient-packed options:
- Vegetables: Spinach (rich in potassium and folate), broccoli (a good source of calcium), and sweet potatoes (loaded with vitamin A and potassium).
- Fruits: Blueberries (low-calorie source of fiber and vitamin C), apples (good fiber content), and any whole fruit you enjoy enough to eat consistently.
- Proteins: Salmon (high in omega-3 fatty acids), beans and lentils (low-fat protein with fiber), eggs, chicken, and Greek yogurt.
- Whole grains: Oats, brown rice, quinoa, and wheat germ (an excellent source of B vitamins, magnesium, and zinc).
- Healthy fats: Almonds (provide magnesium, calcium, and folate), olive oil, avocado, and other nuts and seeds.
Variety matters. Eating the same three meals on repeat makes it easy to develop blind spots in your micronutrient intake. Rotating your vegetable and protein choices weekly is a simple way to cover more nutritional ground.
Set Fiber, Sugar, and Sodium Guardrails
Three numbers are worth tracking beyond your macros, at least loosely. Fiber is the one most people fall short on. The National Academy of Medicine recommends 25 grams per day for women 50 and younger (21 grams after 50) and 38 grams per day for men 50 and younger (30 grams after 50). Beans, whole grains, fruits, and vegetables are the easiest way to get there. If your current intake is low, increase gradually over a week or two to avoid digestive discomfort.
For added sugars, the Dietary Guidelines for Americans recommend staying below 10 percent of your total daily calories. On a 2,000-calorie plan, that’s less than 50 grams, or about 12 teaspoons. Sweetened drinks, flavored yogurts, and cereals are the most common sources. Sodium should stay under 2,300 milligrams per day, which is roughly one teaspoon of table salt. Cooking at home makes this far easier to control than relying on restaurant meals or packaged foods.
Plan Your Meals and Timing
You don’t need to eat six small meals a day. A 2024 systematic review and meta-analysis published in JAMA Network Open found that lower meal frequency was actually associated with slightly greater weight loss (about 1.8 kg more on average) compared to higher frequency eating. The review also found that consuming more of your calories earlier in the day improved metabolic outcomes, likely because it aligns better with your body’s natural circadian rhythms and reduces late-night snacking.
For most people, three meals and one optional snack works well. What matters more than frequency is consistency: eating at roughly the same times each day helps regulate hunger signals and makes it easier to stick to your plan. A practical approach is to divide your daily targets across your meals. If you’re aiming for 165 grams of protein, that’s about 40 to 55 grams per meal across three meals, which is roughly a palm-sized portion of chicken, fish, or tofu plus a side of beans or Greek yogurt.
Here’s what a day on a 2,200-calorie plan might look like:
- Breakfast: Oatmeal with blueberries, a tablespoon of almond butter, and two eggs (roughly 500 calories, 30g protein).
- Lunch: Large salad with spinach, grilled chicken, sweet potato, olive oil dressing, and a piece of fruit (roughly 650 calories, 45g protein).
- Snack: Greek yogurt with a handful of almonds (roughly 250 calories, 20g protein).
- Dinner: Salmon, brown rice, and roasted broccoli (roughly 700 calories, 45g protein).
Stay Hydrated
Your nutrition plan isn’t complete without fluids. The average healthy adult needs about 11.5 cups (2.7 liters) to 15.5 cups (3.7 liters) of total fluid per day, with women generally toward the lower end and men toward the higher end. “Total fluid” includes water from food (fruits, vegetables, soups), so your actual drinking target is somewhat lower. If you exercise and sweat regularly, you need more. Drinking water before, during, and after workouts helps replace what you lose.
Plain water is the simplest choice. If you struggle to drink enough, keep a water bottle visible throughout the day and drink with every meal. Coffee and tea count toward your fluid intake, but sugary drinks work against your added sugar limit.
Track, Adjust, and Simplify Over Time
For the first two to four weeks, tracking your food in an app helps you understand portion sizes and where your calories are actually coming from. Most people are surprised by how calorie-dense cooking oils are, how little protein they were eating, or how much sodium hides in bread and sauces. You don’t need to track forever. The goal is to build an intuitive sense of what your portions should look like.
Weigh yourself at the same time each week (morning, after using the bathroom) and take the average over two to three weeks. If your weight isn’t moving in the direction you want, adjust your calorie target by 200 to 300 calories rather than making drastic cuts. If you’re maintaining weight but feel sluggish during workouts, try shifting your carb-to-fat ratio slightly toward more carbs.
The most effective nutrition plan is one you can follow for months, not one that’s perfect on paper but impossible to maintain. Start with a structure that covers your calories, protein, and fiber targets. Get comfortable with that before fine-tuning anything else. Batch-cooking proteins and grains on weekends, keeping frozen vegetables on hand, and repeating two or three breakfast options you enjoy all reduce the daily decision fatigue that causes most plans to fall apart.