Unlocking Athletic Potential Through Nutrition: A Guide

August 13, 2025 - By Good Athlete Project

By Carter Pavia

NFL players are some of the highest performing athletes in the world. With the rigorous training regimens and physicality of the sport, they have to be. To find consistent success as a professional athlete they have to play fast, lift heavy, and understand the sport on a much deeper level than anyone else. One essential, though too often overlooked, key to achieving all these feats is mastering eating habits, as nutrition is the essential to unlocking the potential of an athlete. Professional franchises see the benefit, as many teams have nutritionists to help maximize player performance. Having a full-time nutritionist might not be realistic; however, we can learn from those top tier athletes in designing a meal plan that works for us.

An athlete’s diet consists of 3 main components, called macronutrients: protein, carbohydrates, and fat. Micronutrients – such as iron, magnesium, and vitamin c – are readily available in fruits, vegetables, nuts and other side dishes. The quality of ingredients is the most important part of a meal plan. While the pillars of an athlete’s diet are similar, variation begins to appear in the form of quantity, depending on position-specific requirements and goals. Volume, or total caloric intake, might differ, while maintaining a similar macronutrient distribution.

Offensive Linemen, the massive human beings in charge of protecting the quarterback, are going to eat very differently from wide receivers, who need to be nimble and quick to get away from defenders and find the endzone. Nutrition is influenced by those position-specific demands.

This article compares the diets of a wide receiver (former NFL standout Brandon Marshall) and the offensive line of the San Francisco 49ers. Marshall’s dedication and hard work earned him 6 Pro Bowl selections, one first-team All-Pro honor, and one second-team All-Pro nod. The offensive line of the San Francisco 49ers have ranked as a top 15 O-Line unit 4 out of the last 5 years, and helped pave the way to 2 Super Bowl appearances since 2019.

Let’s start with Brandon Marshall’s daily routine:

Breakfast
- 7 egg whites
- 1 slice of Monterey cheese
- 1 orange
- 2 cups of blueberries
- and 1 cup of cereal
Lunch
- 6oz chicken breast
- 2 cups of broccoli
- brown rice
In between-Practice meal
- 4oz chicken breast
- Brown rice
- cheese
- 2 peaches
Dinner
- Salmon
- Brown Rice
- Broccoli
Pre-Bed Snack
- Peanut Butter mixed with whey Protein
Snack throughout day
- Blueberries and/or a Quest Bar

Marshall’s total nutritional intake for the day came out to 3,285 calories, 357g of carbs, 269g of protein, and 99g of fat. Now let’s look at the 49ers offensive line group to compare.

Breakfast
- 3 whole eggs mixed with half a cup of egg whites
- 1 cup steel cut oatmeal
- 12 almonds
- 1 cup blueberries
- 8oz orange juice
In between-Practice
- Protein smoothie
Lunch
- Salmon
- Brown Rice
- Mixed Green Salad
- Avocado
- Chocolate Milk
Post-Practice Meal
- Cottage Cheese
- Nuts
- Banana
Dinner
- 6oz. Chicken Breast
- 1 Sweet Potato
- 2 cups mixed vegetables
- Green Machine Naked juice
Pre-Bed Snack
- Protein Smoothie

The total nutritional value for the average day of a 49ers linemen comes out to approximately 6,142 calories, 615 g of carbs, 367g of protein, and 246g of fat. Now, let’s look at these two diets side-by-side.

	Offensive line (49ers)	NFL wide receiver (Brandon Marshall)
Calories	6,142	3,395
Protein (4 cal/g)	367g (1,468 cal)	269g (1,076 cal)
Carbohydrates (4 cal/g)	615g (2,460 cal)	357g (1,428 cal)
Fat (9 cal/g)	246g (2,214 cal)	99g (891 cal)

Even though the offensive linemen eat just over 1.8 times more calories than the wide receiver, when comparing the distribution of total caloric intake to caloric intake per macronutrient, there are some similarities between the two. The similarity in these diets is most obvious in carbohydrates, which account for approximately 40% of both diets. The other 60% is distributed across protein and fat, with subtle distinction between positions. 24% of the offensive linemen’s diet comes from protein, and the remaining 36% from fat, while 32% of Marshall’s diet comes from protein, the remaining 26% comes from fat.

The 49ers meal plan may seem like it has a lot of fat in it, but most of these fats are healthy fats that your body needs like omega-3, and low on unhealthy fats such as saturated and trans fats. There isn’t much difference in food selection as both positions eat high-quality foods like salmon, fruit, chicken, and rice.

An examination of these diets can be helpful, though you don’t need to follow these exact diets to be a success. The average athlete does not need to ‘copy’ the diets of Brandon Marshall or Trent Williams (49ers All-Pro offensive tackle). Following these diets down to the letter does not guarantee a successful NFL career. Instead, use the ratios to build a meal plan that helps you achieve your goal. Whether that’s bulking, or shedding some weight, the ratios will help inform a meal plan that is healthy and customizable.

A couple important takeaways:

Quality is key.
The macronutrient distribution stays somewhat similar, especially with carbohydrates.
The volume of total calories is important, but second to quality.
To have a successful meal plan, you must be disciplined and stick to the plan you made. It only works if you follow it.

The final takeaway is that these plans are customizable. Trent Williams, who has been among the best in the league for over a decade, likely has a tweaked version of his meal plan to accommodate personal preferences while still keeping the main components intact. That’s the great thing about a meal plan. You can adjust all of this to fit your wants and needs. So whether you’re playing quarterback, Wide Receiver, Offensive linemen or scout team long-snapper, understand that nutrition is the key to unlocking your potential and gives you a solid foundation to outshine and outperform the competition.

Intentionality is key. So is quality. Once a high-quality plan is in place, it will take discipline; the plan will only be as successful as your ability to follow it.