The Big 3

The foundation to building lifelong health and fitness.

You’re probably looking at this article thinking, “What do Paul Pierce, Kevin Garnett, and Ray Allen have to do with CrossFit?”

On the surface, not much.

But the way those three came together to win an NBA championship in 2008 is a great metaphor for building a healthy lifestyle and achieving the level of fitness you want.

The Boston Celtics’ Big 3 was built around Paul Pierce, Kevin Garnett, and Ray Allen. Individually, each had already established himself as one of the best players in the league. Together, they became champions.

Fitness has its own Big 3: eating enough real, nutritious food, resistance training, and cardio.

Each of these plays a critical role in your long-term success. You can focus on just one or two and still make progress, but your results will likely be slower, less sustainable, and keep you from becoming the healthiest version of yourself—or, to stay with the analogy, from winning the championship.

Just like the Celtics’ Big 3, these habits are powerful on their own. But when you consistently combine eating enough quality food, lifting weights, and improving your cardiovascular fitness, they work together to create something much greater than any one of them could accomplish alone.

History tells us that championship teams are built with the right pieces working together. The same is true for your health.

Resistance Training (Kevin Garnett)

Just as every championship basketball team needs a physical defensive anchor, every successful fitness plan needs resistance training.

Resistance training is your defense against excess body fat. It builds muscle, and the more muscle you carry, the more calories your body burns throughout the day—even at rest.

The key to making resistance training work is intensity. Intensity doesn’t mean leaving every workout exhausted. It means progressively challenging your body by adding weight, performing more reps, or improving your performance over time. Your goal should always be to get stronger or, at the very least, maintain your strength. Without progressive overload, your body has little reason to adapt or change.

Think about Kevin Garnett. If he didn’t raise his intensity against the league’s best teams, he wouldn’t have been the defensive force that helped the Celtics win a championship. Your resistance training works the same way. When you continue challenging your body, it becomes stronger, builds more muscle, and is better equipped to burn more calories over the long term.

Cardio (Ray Allen)

Cardio is one of the most appropriately valued parts of a well-rounded fitness program. There’s nothing flashy about it. You run, bike, swim, row, or walk, and over time the benefits begin to add up.

Many people treat cardio as the primary way to get fit, but it’s better viewed as the secondary scoring option—just like Ray Allen was for the Celtics. Ray Allen was more than capable of being the first option on many teams, but his role in Boston was to complement Paul Pierce. That role made the entire team better.

Cardio should be viewed the same way.

Done consistently, cardio can dramatically improve your heart health, endurance, work capacity, and even help with weight loss. But if it becomes the only tool you rely on, it comes with tradeoffs. Excessive cardio without enough resistance training can make it more difficult to build or maintain muscle, and muscle is one of your body’s greatest defenses against a slowing metabolism as you age.

Basketball offers another good analogy. Teams that play at a blazing pace can score a lot of points, but if they never slow down enough to play great defense, they’ll eventually give those points right back.

The goal isn’t to do as much cardio as possible. The goal is to do enough cardio to improve your health while still giving your body the opportunity to build and maintain strength. That’s how you create fitness that lasts.

So how much cardio is enough before it becomes excessive?

Let’s look at it through the lens of how we program CrossFit.

For most people, elevating your heart rate for 7 to 32 minutes, 3 to 5 days per week, is enough to make steady, sustainable progress. That amount of work is enough to improve cardiovascular fitness, support overall health, and complement your strength training without turning cardio into the only thing your body adapts to.

Remember, the goal isn’t to see how much cardio you can tolerate. The goal is to do enough to become healthier while leaving room for your body to get stronger.

Eating Enough Healthy Food (paul Pierce)

Paul Pierce was the original Celtic in this Big 3 and the player the offense revolved around. He was the primary scorer, and no matter how great Kevin Garnett and Ray Allen were, the Celtics weren’t winning a championship without him.

The same is true for nutrition.

No matter how you look at it, the food you put into your body sets both the floor and the ceiling for your fitness.

Notice we say eating enough healthy food. It’s not just about eating healthy foods—it’s about eating enough of them. Your body needs adequate calories and quality nutrition to build muscle, recover from training, improve cardiovascular fitness, and make steady progress over time. Without enough fuel, your body simply can’t perform or adapt the way you want it to.

Just like the Celtics needed their primary scorer, your fitness depends on nutrition being your primary contributor. One of the biggest mistakes people make is trying to outwork a poor diet or consistently underfueling themselves in the name of losing weight.

I can’t stress this enough: there is no benefit to constantly starving yourself. No food means no energy. Too little food means too little energy. Without energy, your workouts suffer, your recovery slows down, and your progress eventually stalls.

If you aren’t sure how much you should be eating, talk to a coach. Having a plan that matches your goals is one of the best investments you can make in your health.

The foods that score points for your body are simple: lean meats, eggs, rice, potatoes, fruits, vegetables, healthy fats like nuts and avocado, and plenty of water. Eat enough of those consistently, and you’ll give your body the fuel it needs to perform, recover, continue improving, and ultimately win your championship.

Role Players (Supplements, Medicine, Sports, and More)

No basketball team is built with just three players. You need a full roster, and the same is true for your fitness.

While the Big 3 will have the greatest impact on your results, things like sleep, stress management, sports, daily activity, supplementation, and even medication can all play valuable supporting roles. For some people, these role players can make a meaningful difference in helping them reach their goals.

The key is remembering that they’re role players, not superstars.

Too often, people look for shortcuts through supplements, fad diets, or the latest fitness trend while ignoring the habits that matter most. But no role player can carry a team to a championship without its stars.

As it relates to fitness, I don’t care what combination of role players you choose as long as you prioritize resistance training, cardio, and eating enough healthy food. Those three habits are the foundation of your health and fitness.

Everyone’s roster looks a little different. Find the role players that help you, but never forget who should be leading your fitness journey: the Big 3.

Coach’s Take

Before you buy another supplement, start another diet, or look for the next fitness trend, ask yourself one question:

“Have I mastered the Big 3?”

-Coach Marcus