How Long Does Pre-Workout Last? What the Science Says
Many people know when to take pre-workout supplements. But fewer know how long the effects will last, though that's often just as important.
We break down the science of these popular supplements to help you use them the right way.
Key Takeaways
- Pre-workout supplements are designed to enhance exercise performance.
- They often contain stimulants, like caffeine.
- Experts generally recommend taking pre-workout 20-60 minutes before exercise, and it often takes around that long for the effects to kick in.
- These effects can last for hours.
- Stimulants can continue causing effects for several hours, which is why experts usually recommend against taking pre-workouts containing stimulants close to bedtime.
- If you want to work out in the evening, consider a zero-stim pre-workout instead.
See More: How Often You Should Go to the Gym for Optimal Results
All About Pre-Workout
Carriejune, founder of Minibeast, says:
"The effects of pre-workout generally begin to peak around 30 minutes after you take it, though that depends on the specific ingredients and your metabolism. These effects can last for hours, especially if your pre-workout contains stimulants like caffeine."
Pre-workout supplements are some of the most popular in the fitness world. Millions of people take them.
It's not hard to see why. Pre-workouts provide a range of potential benefits. They can provide an energy boost, improve focus, help you push harder, and support muscle growth.
Of course, that's assuming you take them correctly.
As the name implies, you generally take pre-workout before exercising. Recommendations range from 20 minutes to 60 minutes before starting.
It might not surprise you to learn that the effects of pre-workout usually peak within 30 to 60 minutes after you take it. But those effects can last much longer. In some cases, they might last several hours.
If you're considering taking pre-workout, it's important to figure out how long it will last. We'll break down some of the most common ingredients in high-quality pre-workout formulas to help you perfect your workout routine.
Pre-Workout Ingredients and Their Potential Benefits
Pre-workout supplements are usually made up of multiple ingredients. They're also called "mixed-ingredient pre-workout supplements."
Different formulations can vary widely in terms of quality. Some are packed full of synthetic fillers, artificial ingredients, and sugar.
Others, though, contain research-backed ingredients. There are a few in particular that you should look out for.
Caffeine
Many pre-workouts contain stimulants. If they contain a lot, they're usually called high-stim pre-workouts. Those with less are called low-stim pre-workouts.
Caffeine is one of the most popular stimulants in pre-workout formulas. It's a great choice. Research suggests caffeine can boost energy and support focus during a workout.¹
How much caffeine is enough? Well, the International Society of Sports Nutrition notes that caffeine "has consistently been shown to improve exercise performance when consumed in doses of 3-6 mg/kg body mass."²
Amino Acids
Some high-quality pre-workout formulas contain amino acids. Your body needs these to build new muscle.
"Our body breaks down protein," explains Minibeast founder Carriejune, "and all that's left are these amino acids, which are used to grow muscle, repair, and do a ton of other functions.… Your body can't produce some of these aminos on its own. That's why you need to get them from another source."
Some amino acids are called branched-chain amino acids, or BCAAs. Research suggests that taking BCAAs can reduce muscle breakdown and muscle soreness.³
One particularly important amino acid is called beta-alanine. It helped increase the concentration of carnosine, which is believed to support muscle endurance and performance.⁴
Research suggests that beta-alanine supplementation can enhance exercise performance.⁵
Some people find that taking beta-alanine causes a tingling sensation. This often kicks in about 30-60 minutes after taking it.
Creatine
Creatine monohydrate is a widely popular workout supplement in its own right. Your muscles use it for an energy boost during intense physical activity. It's also a key component of ATP, which your body uses for energy.
Research has shown that creatine supplementation can enhance workout performance.⁶ When combined with resistance training, creatine supplementation is associated with increases in muscle strength and size.⁷
Bonus: Does Sweating Actually Help Burn Calories?
How Long Pre-Workout Lasts
Not all of the ingredients in a pre-workout formula need to kick in immediately. Creatine, for example, is stored in the muscles over time, then used when needed. Taking creatine regularly helps top up and maintain those stores.
However, some ingredients definitely do kick in at certain points.
Caffeine is usually the most noteworthy. Its concentration usually peaks about 30-60 minutes after you take it.⁸ And its effects may be felt for 4-10 hours after.
How long these effects last can depend on various factors, such as your individual metabolism. The specific ingredients and their concentrations in a particular pre-workout formula also play an important role.
In short, then, pre-workouts start to kick in about 30-60 minutes after you take them. Most people start to feel noticeable effects around then.
That's why most experts consider the sweet spot for taking them to be between 20-60 minutes before a workout. Different bodies react to pre-workout in different ways, so it's important to take your pre-workout at the best time for you specifically.
For the best results, experts also generally recommend taking your pre-workout with water. Drinking enough water is important for general wellness, but is particularly important when exercising with pre-workout. Make sure to drink plenty of water and stay hydrated, especially if you're going to be training longer than usual.
Half-Life
One way to estimate how long a pre-workout might last is by looking at the half-life of its main ingredients. The half-life of a substance describes the length of time it takes for the concentration of that substance to decrease by half.
For example, caffeine's half-life is typically about five hours. However, its half-life can vary quite widely in different individuals.
For that reason, experts often recommend against taking pre-workouts with stimulants in the evening. The stimulants might keep you alert, but they can interfere with your sleep. Quality sleep is absolutely crucial for recovery and progress, so you don't want to undermine it.
Fortunately, some pre-workout formulas don't contain stimulants at all. They're called zero-stim pre-workouts.
Where to Get High-Quality Pre-Workout Supplements
Now that you know some key ingredients to look for, you can feel confident picking out a high-quality pre-workout formula.
Here are a few great options.
For maximum energy, try Minibeast's Game Over. It's a high-stimulant formula that hits hard and doesn't let up. The mix includes plenty of caffeine, buffered creatine monohydrate, and amino acids like beta-alanine.
If you don't need quite so much caffeine, try a low-stim option like MB Mode. It's got enough caffeine for a steady lift, plus aminos like beta-alanine and L-Theanine to help keep you sharp.
What about zero-stim, for those who want to work out before bed? MB Pump delivers laser focus without any stimulants, thanks to potent ingredients like L-Citrulline malate, taurine, betaine, and niacin.
Conclusion
Experts usually recommend taking pre-workout about 30 minutes before working out. The effects of pre-workout, including stimulants like caffeine, often take around that long to fully kick in. But they can last for hours, depending on your metabolism and the specific ingredients included.
Frequently Asked Questions
How Long Does it Take for Pre-Workout to Wear Off?
That depends on the formula and your individual metabolism. Typically, the stimulant effects peak around 30-90 minutes after you take your pre-workout. These effects can last for a few hours or more.
How Late Is Too Late for Pre-Workout?
If your pre-workout contains stimulants like caffeine, it's often best to avoid taking them several hours before bedtime. That's especially true if they're high in caffeine. Zero-stim workouts don't necessarily have the same restrictions, though experts do generally recommend ending exercise an hour or two before bed.
Will Pre-Workout Keep Me Up at Night?
If your pre-workout contains stimulants like caffeine, it may well keep you up at night. That's why experts generally recommend taking them in the morning or early afternoon at the latest. If you want to work out in the evening, consider a zero-stim pre-workout.
Keep Reading: Does Creatine Help You Lose Weight?
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Sources
- How Caffeine Improves Exercise Performance
- International society of sports nutrition position stand: caffeine and exercise performance - PMC
- Effects of Amino Acid Supplementation on Muscle protein metabolism and adaptation: a narrative review of effects on muscle mass, strength, and sex differences - PMC, Effect of Timing of Branched-Chain Amino Acid Supplementation on Muscle Recovery after Resistance Training in Healthy Males
- Carnosine, Small but Mighty—Prospect of Use as Functional Ingredient for Functional Food Formulation - PMC
- β-Alanine supplementation increased physical performance and improved executive function following endurance exercise in middle aged individuals, Effects of β-Alanine Supplementation on Subjects Performing High-Intensity Functional Training
- Why everyone’s talking about creatine | UCLA Health
- The effects of pre versus post workout supplementation of creatine monohydrate on body composition and strength | Journal of the International Society of Sports Nutrition | Springer Nature Link
- How Long Does Caffeine Stay in Your System?
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