How Many Carbs Should You Eat to Build Muscle?

Carbohydrates may be the most misunderstood macronutrient in bodybuilding. And by “may be,” I mean they absolutely are. 

Some lifters treat carbs as a free-for-all for building muscle—double rice, more mashed potatoes! Others slash them at the first sign of body-fat gain and try to train on little more than protein, caffeine, and determination.

Neither approach gets the full picture.

Carbohydrates don’t supply the amino acids your body uses to build muscle tissue, and unlike protein and dietary fat, there are no “essential” carbohydrates you have to get from food. Your body can produce the glucose it needs even when dietary carbohydrate intake is low.

But that doesn’t make carbs unimportant for muscle growth. Carbohydrates help fuel intense training, replenish muscle glycogen, support recovery, and make it easier to consume enough total energy to add size. If you’re training hard and trying to maximize muscle, cutting carbs simply because they aren’t technically essential can make the job harder than it needs to be.

The key is not to eat as many carbs as possible. It’s to find the amount that supports your training and muscle growth without leading to excessive body-fat gain.

That’s why my rule isn’t to maximize carbs. It’s to manipulate them.

My Carb Intake Rule

Before you worry about carbohydrates, set your daily protein intake and dietary fat intake . Those two macronutrients supply essential nutrients your body can’t produce on its own, so I consider them the more consistent parts of a muscle-building diet.

Once those targets are in place, use carbohydrates as your adjustable macronutrient.

Here’s my recommended starting point:

Aim for 1.5–2 grams of carbohydrates per pound of body weight on training days, at minimum.

That works out to:

• 225–300 grams per day for a 150-pound person
• 270–360 grams per day for a 180-pound person
• 300–400 grams per day for a 200-pound person

That’s a starting range, not a number every lifter needs to follow indefinitely. Some people can eat well above 2 grams per pound, train like animals, and continue gaining muscle with very little body fat. Others respond better near the lower end of the range.

Your training volume, metabolism, activity level, goals, and individual response all matter. The only way to find your ideal intake is to start with a reasonable target, monitor what happens, and adjust from there.

How Carbs Support Muscle Growth

Protein provides the building materials for muscle, but you still have to give your body a reason to use them. That reason is hard, progressive resistance training—and carbohydrates can help supply the fuel to do more of it.

Most of the carbohydrates you eat are broken down into glucose. Your body can use that glucose immediately for energy or store it in your muscles and liver as glycogen. During resistance training, your muscles draw on glycogen to help fuel repeated high-intensity efforts.

The longer and more demanding the workout, the more carbohydrate availability can matter. One study found that consuming carbs improved total resistance-training volume most reliably during sessions lasting longer than 45 minutes, workouts with a high number of hard sets, and training performed after an overnight fast.

That doesn’t mean a bowl of oatmeal will magically add 50 pounds to your squat. For shorter workouts performed after you’ve already eaten, research suggests that extra carbs may not produce an immediate performance boost. But if you regularly perform high-volume workouts,

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