When Is the Best Time to Drink a Protein Shake?

Protein shakes are to bodybuilding what helmets are to soldiers—a tool that’s inextricably linked to their trade.

After all, you’ve probably heard that you should eat more protein if you want to build muscle, and what easier way to consume said protein than drinking a few protein shakes throughout the day?

If you’ve dug around the world of bodybuilding nutrition for, oh, more than about 10 seconds, you’ve also probably heard that you should drink your protein shakes at specific times to maximize their benefits. 

Some say you should slam a protein shake before and after your workouts, others say first thing in the morning, others right before bed, and some even say you should wake up to drink protein in the middle of the night.

Who’s right?

The truth is, you do need to eat a high-protein diet if you want to build muscle effectively, and drinking protein shakes does make hitting your daily protein target easier. That said, when you drink a protein shake isn’t half as important as many people would have you believe, and might not matter at all depending on your eating schedule.

In it you’ll learn the answers to questions like:

Why drink protein shakes?
What does protein do for your body?
Should you have protein before or after your workout?
When is the best time to drink a protein shake if you want to build muscle, lose fat, or if you’re a woman?

Why Drink Protein Shakes?

To understand why people drink protein shakes, you first need to answer the question: what does protein do for your body?

A protein is a compound that the body uses to create tissues, hormones, enzymes, and various other chemicals essential to life.

It’s made up of chains of smaller molecules known as amino acids, which are the basic building blocks of your body.

Your body requires twenty amino acids to form proteins. It can produce 11 on its own but must get the remaining 9 from the food you eat. 

The primary reason you eat protein is to provide your body with adequate essential amino acids to build and repair the various tissues that make up your body.

Regular exercise—and weightlifting in particular—increases the body’s demand for protein.

Specifically, research shows that you generally want to eat at least 0.8-to-1 gram of protein per pound of body weight per day to maximize muscle growth and repair.

Many people balk when they realize how much protein they need to eat per day, and although you can get all of your protein needs from whole foods, this can be impractical for a few reasons:

It can make balancing your macronutrient intake tricky.
High-protein foods often don’t store well and can be difficult to transport (e.g. baked chicken breast or yogurt).
Getting most of your daily protein from just a few food sources, as many people do, can get old very fast.

And that’s where protein shakes come in. 

Protein shakes are . . .

Perfect for fast-and-easy snacking
Often preferable to eating yet another meal
Usually low in carbs and fat, which makes meal planning easier
Affordable (in terms of price per gram of protein)

. . . which is why most people agree they’re a convenient and practical addition to any gym-goer’s supplement regimen.

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Should You Have Protein Before or After Your Workout?

Many people worry unduly about whether it’s better to have a protein shake before or after their workout.

The truth is, provided you eat regular high-protein meals more or less evenly spread throughout the day, it doesn’t matter whether you eat before or after your workout.

You see, it takes your body several hours to digest and absorb protein (and perhaps even longer if the protein you eat is part of a large meal that also contains carbohydrates and fat).

For example, if you ate just 26 grams of steak (a small amount of steak by most people’s standards), it’ll take at least 6 hours to be fully digested and absorbed by your body. If you add vegetables, fat, and starch to the meal, the release of amino acids will probably continue for closer to 10 hours.

Thus, if you eat around three-to-six high-protein meals each day, it’s highly likely that you’ll be digesting protein continuously throughout the day. 

Dr. Eric Helms, a researcher, natural bodybuilding coach, and member of Legion’s Scientific Advisory Board, describes this better than anyone: “There is a veritable conga line of food, even just a meal or two into the day, backed up far enough that changes in amino acid release in the the bloodstream, and the subsequent delivery to muscles, becomes much more steady than you might think. This reality makes many of the micro-manipulations of protein timing pointless.”

That is, you don’t need to slam a pre-workout shake to avoid “going catabolic” during your workout, and knocking back a post-workout shake won’t help you take advantage of the “anabolic window.” Eating high-protein foods throughout the day (on your normal eating schedule) provides all the “pre- and post-workout protein” you need to build muscle.

Having said that . . .

If you train 3-to-4 hours after eating a relatively small meal, then it’s probably a good idea to consume ~20 grams of protein an hour or so before you work out.
If you like to train fasted, make sure you get in ~20 grams of protein within an hour or so of finishing your workout to minimize muscle protein breakdown.

And if you find yourself in either of these situations, drinking a protein shake is probably the easiest way to get the protein you need.

When Is the Best Time to Drink Protein Shakes?

Protein shakes make hitting your total daily protein target easier because they’re a convenient way to consume high-quality protein.

There’s nothing inherently special about them, though, which is why there’s no “best” or “worst” time to drink one.

In most cases, the best time to drink a protein shake is whenever you want to drink a protein shake.

That said, depending on your goals, there may be slightly better times to have protein shakes than others. Let’s take a look at some common scenarios.

When to Drink Protein Shakes for Muscle Gain

When it comes to building muscle, consuming enough total protein each day is far more important than when you consume your protein.

Assuming you’re already hitting your daily protein target, however, research shows that . . .

You’ll probably gain muscle faster eating four-to-six servings of protein every day than fewer.
Having some protein within one-to-two hours pre and post training has—at best—a very small but positive effect on muscle growth. That said, this doesn’t necessarily have to be in the form of a protein shake—you can also just eat a high-protein meal within a couple hours of the beginning and ending of your workout.  

Thus, if you want to do everything you can to maximize muscle growth, consume protein shakes . . .

Between meals (and possibly before bed) to make sure you evenly space out your servings of protein throughout the day
One-to-two hours before you train if you haven’t had a high-protein meal within two hours of starting your workout, or one-to-two hours after you train if don’t plan on eating a high-protein meal within two hours of finishing your workout 

In the big scheme of things, the timing of your protein shakes relative to your workouts isn’t overly important. Your first priority is always to consume enough total protein throughout the day, and your second priority is to evenly spread that protein out across about 4-to-6 meals per day. Once you’re doing those two things, you don’t need to worry about much else when it comes to protein timing.

When to Drink Protein Shakes for Weight Loss

Research shows that following a high-protein diet helps you lose fat faster and preserve muscle, which is why protein shakes are a great addition to any weight-loss diet.

For best results . . .

Have a protein shake with breakfast.

Studies show that eating plenty of protein at breakfast can help you to eat less throughout the rest of the day and reduce cravings for unhealthy foods.

Replace snacks with protein shakes.

Research shows that protein shakes help to control your appetite and increase feelings of fullness.

Basically, you want to follow the same guidelines while cutting as you do when trying to build muscle. The only difference is that you may want to slightly increase your total protein intake and consume more protein when you get hungry throughout the day. 

When to Drink Protein Shakes for Women

When it comes to protein shakes, women don’t need to do anything differently than men.

If you’re a women, the only thing to bear in mind is that you’re likely to have a lower daily protein target than most men, and if you’re already eating three-to-four high-protein meals each day, you may only be able to to fit in one protein shake per day (while a man may be able to drink two or more).

FAQ #1: Should I drink protein shakes on rest days?

If it helps you hit your protein target, yes.

Continuing to eat a high-protein diet on rest days ensures you keep muscle protein synthesis elevated and thus your body’s muscle-building machinery firing on all cylinders, and helps your muscles recover between workouts.

FAQ #2: Should I drink a protein shake before bed?

It’s not always necessary, but it may be a good idea.

Research shows that having 30-to-40 grams of a slow-burning protein like casein (or low-fat cottage cheese or Greek or Icelandic yogurt) before bed may help to speed up muscle recovery. That said, more recent research shows there may be no additional benefit to eating protein before bed so long as you’re eating enough total daily protein and spacing your consumption throughout the day, so your mileage may vary.

If you’re interested in giving pre-bed protein a try and want a clean, 100% natural, delicious micellar casein protein powder that’s naturally sweetened and flavored and contains no artificial dyes or other chemical junk, try Casein+.

FAQ #3: What’s the best protein supplement?

Whey protein powder is most people’s top pick—and for good reason. 

Not only is it rich in the amino acid leucine—an amino acid that plays a vital role in stimulating protein synthesis—it’s rapidly digested and easily absorbed by the body. In other words, it kicks off the muscle-building process, then provides everything the body needs to get the job done quickly and easily. 

What’s more, high-quality whey protein powder tastes good and tends to provide a lot of protein per dollar spent, so it’s convenient and cost-effective.

If you want to enjoy a 100% natural grass-fed whey isolate protein powder made with milk from small, sustainable dairy farms in Ireland, try Whey+.

For most people, casein is the next most popular choice after whey protein. It offers roughly the same benefits in terms of building muscle, but has a thicker, creamier texture that many people enjoy, and releases amino acids over a much longer period of time, which may offer some muscle-building advantages over whey. 

+ Scientific References

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