Does Pre-workout Make You Gain Weight? Uncovering the Truth

Imagine you’ve been taking pre-workout to help fuel your desire to burn calories, but you aren’t losing weight.  Many workout buffs and gym rats take pre-workout without knowing what it actually does to the body outside of adding a little “pump” to the routine.  “Does my pre-workout make me gain weight,” was something discussed in our gym the other day, so let’s tackle this.  For the record, I drink black coffee every morning as my pre-workout.

In this blog post, we’ll explore pre-workout supplements, scrutinize the ingredients that may lead to weight gain, and offer practical advice on selecting the ideal pre-workout to align with your fitness objectives. So, let’s dive in and unravel the mystery!

Pre-workout Ingredients and Their Effects

Before determining if pre-workout supplements cause weight gain, we must understand the key ingredients and how they affect your body. Here are some common components found in pre-workouts and their potential impact on your weight:


Caffeine is one of the common ingredients in pre-workout supplements, with most of them containing 150mg to 300mg per serving. It can impact your weight due to the following:

  • Stimulant Effects: Caffeine is a popular ingredient in many pre-workouts because it increases alertness and reduces fatigue. It provides a quick energy boost, helping you push through tough workouts.
  • Impact on Metabolism: Caffeine has been shown to increase metabolism, potentially aiding in fat burning slightly. However, this effect is modest and unlikely to cause significant weight loss.


Creatine is a natural substance present in trace amounts in specific foods and produced internally by the human body. The liver, kidneys, and pancreas primarily generate creatine, using the amino acids glycine, arginine, and methionine as building blocks. Creatine is vital in providing energy to cells, particularly muscle cells. It increases the formation of adenosine triphosphate (ATP), the body’s primary energy source. Its presence in the pre-workout supplement can impact weight through:

  • Water Retention: Creatine is known for increasing water retention in your muscles. While this may result in a temporary increase in weight, it’s essential to understand that this is not the same as gaining body fat.
  • Muscle Mass gain: Creatine supplementation can help you build lean muscle mass, which may cause an increase in overall weight. However, gaining muscle is desirable for most people looking to improve their fitness.

Branched-Chain Amino Acids (BCAAs)

BCAAs consist of three vital amino acids: leucine, isoleucine, and valine. They are called “branched-chain” due to their distinct chemical structure characterized by a branched side chain. The human body cannot produce these amino acids as essential amino acids, and they must be acquired through diet or supplements. BCAAs play several essential roles in the body, particularly in muscle growth, recovery, and metabolism, and they can affect your weight through:

  • Faster Muscle Recovery and Growth: BCAAs, such as leucine, isoleucine, and valine, play a crucial role in muscle recovery and growth. They can help reduce muscle soreness and promote muscle protein synthesis.
  • Influence on Weight Gain: BCAAs are unlikely to cause significant weight gain. However, they can contribute to muscle growth, which could result in a minor increase in weight due to increased muscle mass.

Artificial Sweeteners

Also known as sugar substitutes or non-nutritive sweeteners, artificial sweeteners are synthetic or naturally derived compounds used to sweeten food and beverages without adding significant calories. They are much sweeter than regular sugar (sucrose), so only a small amount is needed to achieve the desired level of sweetness. These sweeteners can affect your weight in the following ways:

  • Caloric Content: Some pre-workout supplements contain artificial sweeteners, which may add a small number of calories to the product. While these calories are minimal, they can still contribute to daily calorie intake.
  • Potential Impact on Cravings: There is debate over whether artificial sweeteners can stimulate cravings for sweet foods. If this is the case, it could indirectly contribute to weight gain by encouraging you to consume more high-calorie, sugary foods.

Choosing the Right Pre-workout

Now that we’ve explored the ingredients in pre-workout supplements, let’s discuss how to choose the right one for your fitness goals:

Choosing the Right Pre-workout

Assessing Your Fitness Goals

It’d be best to assess your fitness goals when choosing a pre-workout to avoid undesired results. Some of those goals can include:

  • Weight Loss: If your primary goal is weight loss, opt for a pre-workout that contains minimal calories and focuses on ingredients that support fat burning, such as caffeine.
  • Muscle Building: For those looking to build muscle, choose a pre-workout that contains creatine and BCAAs, which can aid in muscle growth and recovery.
  • Endurance: If you’re an endurance athlete, focus on pre-workouts that provide sustained energy, such as those containing caffeine and beta-alanine.

Checking Ingredient Labels

For safety and efficiency, you should check the ingredients in your pre-workout. While at it, identify key components. Always read the ingredient label on pre-workout supplements, looking for the components we’ve discussed that align with your fitness goals.

In addition, you should avoid unnecessary additives. Look for artificial sweeteners and other additives that may contribute to weight gain or aren’t essential to your fitness goals. Opt for products with minimal or natural sweeteners when possible.

Comparing Pre-workout Options

It is also essential to compare the available options when choosing your pre-workout. Ensure that you choose research-backed products. Look for pre-workouts with scientific research supporting their claims and effectiveness. This will help ensure you’re investing in a product that delivers results.

Additionally, recommendations from professionals are also critical. Consult with personal trainers, nutritionists, or other fitness professionals to get their input on the best pre-workout options for your needs.  Some of the top rated diet pills can actually double as a pre-workout as they are stimulants that provide energy.

Lastly, it will help to compare cost-effectiveness. Pre-workout supplements can be an investment, and choosing the right one ensures you are spending your money wisely on a product that works for your specific needs rather than wasting funds on ineffective or unsuitable products.


  • Can pre-workout cause bloating or water retention?

Certain components, such as creatine, may lead to short-term water retention within your muscles. Nonetheless, this is typically not a problematic issue and should not be mistaken for increased body fat.

  • How much pre-workout should I take to avoid weight gain?

Follow the manufacturer’s recommended dosage and choose a pre-workout that aligns with your fitness goals. Excessive consumption is not necessary and may lead to unwanted side effects.

  • Will cutting pre-workout supplements from my routine lead to weight loss?

Discontinuing pre-workout supplements may result in minor weight loss if they contain calories. However, your overall diet and exercise habits play a much more significant role in weight management.

  • Can I build muscle without gaining weight with pre-workout?

Pre-workout supplements can support muscle growth, but building muscle without gaining some weight is challenging. Muscle mass contributes to overall body weight, so an increase in muscle may lead to a slight weight gain.


In conclusion, pre-workout supplements can play a role in weight gain or loss depending on their ingredients and how they align with your fitness goals. Choosing a pre-workout that supports your objectives and doesn’t contribute unnecessary calories or additives is crucial. You can optimize your fitness journey and achieve desired results by personalizing your pre-workout choices and maintaining a healthy diet and exercise regimen.

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