Why Does Pre-Workout Make Me Tired?

why does pre workout make me tired

Do you ever feel like a sluggish sloth after taking a pre-workout supplement? If so, don’t fret because you’re definitely not the only one.

A lot of folks who are passionate about fitness use pre-workout supplements to enhance their workout performance.

These supplements are specially formulated to increase your energy levels, sharpen your focus, and improve your endurance during exercise.

But, contrary to their expectations, some individuals may experience fatigue after consuming pre-workout supplements.

If you’re one of them, don’t worry because, in this blog, we’ll delve into why pre-workout supplements can make you tired.

Reasons Why Pre-Workout Makes You Tired

Following are some of the plausible reasons why pre-workout workouts make you feel tired and fatigued.

pre workout makes me tired

Overstimulation of the Nervous System

One of the reasons why pre-workout makes you tired is due to overstimulation of the nervous system.

The main culprit here is caffeine, which can give you an initial burst of energy and make you feel more awake.

However, too much caffeine can lead to jitters, anxiety, and a sudden crash in energy levels, leaving you feeling more like a wilted flower than a pumped-up gym rat.

And it’s not just caffeine – pre-workout supplements may also contain other stimulants like beta-alanine and yohimbine, which can further contribute to overstimulation and leave you feeling as exhausted as a marathon runner at the finish line.

So, what’s the solution? It’s simple – stick to the recommended dosage and don’t take these supplements too close to bedtime.

Doing so can avoid feeling like a zombie the next day and get the most out of your workout without feeling like you need a nap afterward.

Nutrient Depletion

Proper nutrition before and after workouts is crucial for optimum performance and recovery.

Many people opt for pre-workout supplements to boost their energy levels and increase their endurance during exercise.

However, some pre-workout supplements can lead to fatigue instead of increased energy.

This is because these supplements can deplete essential nutrients in the body, such as magnesium, potassium, and sodium, which are important for muscle function and energy production.

Nutrient depletion can lead to fatigue, weakness, and even cramping during workouts.

Therefore, it is important to choose pre-workout supplements that are designed to replenish these essential nutrients to avoid feeling tired during and after workouts.

Additionally, maintaining a well-balanced diet that provides adequate nutrients can help prevent nutrient depletion and keep energy levels high during exercise.

Individual Reactions to Ingredients

Regarding pre-workout supplements, everyone reacts differently to the ingredients in these products. This can have a big impact on energy levels and fatigue during exercise.

For instance, caffeine is a common ingredient in many pre-workout supplements. But did you know that genetic differences in caffeine metabolism can affect how your body processes this stimulant?

Some people metabolize caffeine quickly, so they may not feel much of an effect, while others metabolize it slowly, which can cause jitters, anxiety, and fatigue.

It’s also possible to experience fatigue and other symptoms if you have an allergic reaction to any of the ingredients in your pre-workout supplement.

That’s why it’s essential to read ingredient labels carefully and avoid anything that you know triggers an allergic response.

Lastly, some people are sensitive to specific ingredients like beta-alanine or creatine, which can also cause fatigue or discomfort.

By paying close attention to how your body reacts to different pre-workout supplements, you can make adjustments to your routine and find the right combination of ingredients to help you perform at your best.

Adrenal Fatigue

Another reason you might feel sleepy and tired after a workout could be attributed to adrenal fatigue caused by prolonged stress on the adrenal gland.

The adrenal gland is responsible for producing hormones that help your body respond to stress.

But if it’s overworked, it can lead to all sorts of issues like fatigue, mood swings, and sleep disturbances.

Pre-workouts usually contain a lot of caffeine, which can give you a boost of energy in the short term.

But over time it can cause your adrenal gland to produce even more cortisol, which can contribute to adrenal fatigue.

So, suppose you want to avoid this. In that case, it’s really important to be mindful of your pre-workout usage.

You should prioritize things like getting enough rest and managing your stress levels so that you can keep your adrenal gland functioning properly.

Tips to Avoid Pre-Workout Induced Tiredness

Tips To Avoid Pre-Workout Induced Tiredness

Here are a few tips to not feel tired while taking pre-workout supplements:

Check The Ingredients

Who wants to feel like a jittery mess on the gym floor? Not us!

Give those ingredient labels a once-over and opt for a balanced mix that won’t leave you feeling like a wild kangaroo on caffeine.

Stay Hydrated

Water is the elixir of life, people! Don’t let dehydration get in the way of your epic workout.

Keep chugging that H20 before, during, and after your sweat session to keep your body functioning like a well-oiled machine.

Get Enough Sleep

Beauty sleep? More like workout beauty sleep! Aim for at least 7-8 hours of snoozin’ to wake up feeling like a well-rested superhero ready to conquer that workout.

Eat A Balanced Diet

Your body needs fuel, not just any fuel – quality fuel! Load up on those fruits, veggies, lean proteins, and healthy fats to rock that workout and feel like a boss.

Avoid Overstimulation

It’s tempting to throw caution to the wind and guzzle down all the pre-workout supplements, but hold your horses!

Stick to the recommended dose and avoid overstimulation that can lead to exhaustion and an epic post-workout nap.

Take Breaks

Rest days aren’t just for lounging on the couch with Netflix (although that’s also a great idea!).

Give your body the recovery time between workouts so you can avoid feeling like a pile of mush and stay on top of your game.

Healthy Alternatives To Pre-Workouts

 healthy fats and protein

Following are some really helpful alternatives to pre-workouts that can give you the desired effects without making you feel tired and exhausted:


A classic choice for many, coffee is a great natural source of caffeine. It can help you feel more alert and focused during your workout.

Just be mindful of your consumption, as too much caffeine can cause jitters and anxiety.

Green Tea

If you’re looking for a milder source of caffeine, green tea is a good option. It also contains antioxidants and can help increase your metabolism.


The fruits like bananas, apples, and berries are great sources of natural sugars that can provide a quick burst of energy. They’re also rich in vitamins and minerals essential for good health.


A good source of healthy fats and protein, which can help keep you feeling full and energetic. They’re also a good source of magnesium, which can help regulate energy levels.


Pre-workout supplements work wonders, but when they don’t, they leave us feeling as tired as a sloth. And we don’t want that, do we?

To avoid feeling like a deflated balloon, check those labels, stay hydrated, sleep well, eat healthily, and don’t overdo it.

Remember, slow and steady wins the race, and with pre-workout; it’s all about the long game. Keep it up, and you’ll achieve your fitness goal!

Leave a Comment