Why Does Working Out Make Me Tired?

Why Does Working Out Make Me Tired? It’s a common question with a variety of answers. Find out why you might feel more exhausted after a workout session.


Understanding why working out makes you tired can be a perplexing question. It’s easy to think that exercise should give you more energy and make you feel great, but all too often the opposite seems to be true. The good news is there are many reasons why people get tired after working out, and learning how to manage your energy levels can help combat fatigue in the future. In this article, we will take a look at why working out makes us tired and how to prevent it from occurring as often.

Reasons for Fatigue

Working out is an activity that leads to fatigue for a variety of reasons. Physical exertion causes our bodies to use more energy, which can lead to a decrease in energy levels and make us tired. Additionally, the environment in which we work out can play a role in how tired we get. Factors such as heat and humidity can contribute to tiredness and exhaustion. Let’s take a closer look at why working out can lead to fatigue.


Overtraining occurs when you exercise too intensely, too often and/or don’t get enough rest. When this happens, your body is forced to supply extra fuel for all your activities, which can result in fatigue and burnout. While everyone’s definition of “overtraining” is different, in general overtraining involves doing more than you can physically handle without recovery in between. If you work out at a high intensity level several days a week or do excessive amounts of cardio without taking a break it may lead to severe fatigue and muscle soreness.

In addition to physical exhaustion, overtraining may also cause mental exhaustion and anxiety. When your body experiences extended stress from physical activity it begins to release large amounts of cortisol—a hormone released by the adrenal glands in response to stress. If cortisol levels remain elevated for too long, it could lead to increased feelings of motivation as well as cognitive exhaustion and depression.

To prevent overtraining syndrome and fatigue it’s important for athletes to ensure their recovery protocols are adequate— find a balance between intense training sessions with adequate rest periods in order to allow your body time to recover from the stress caused by the activity. Additionally proper nutrition before, during and after workouts will help the body protect itself from fatigue due to improved energy delivery throughout the excess exercise session.

Not Eating Enough

Not eating the right foods before or after a workout can lead to fatigue. The goal is to give your body enough energy while also providing it with essential nutrients. If you don’t eat enough, your body will not have the fuel it needs to maintain its energy levels.

It’s important to get a balance of carbohydrates, fats, and proteins. Some people believe in the practice of “carb loading” before a workout—eating more carbohydrates than usual—to make sure they will have lots of energy for exercise.

You should also be mindful of what you eat after a workout. The focus should be on eating meals that are high in protein and carbohydrates quickly, as this combination helps refuel your muscles and replace lost stores of glycogen (energy). Eating something small shortly after exercising is essential; otherwise, you may experience dizziness or lightheadedness due to low blood sugar levels!

Not Drinking Enough Water

An important factor to be mindful of when exercising is your hydration. Many people think they are doing the right thing by not drinking too much water as to not become bloated, but as a result, they begin dehydration which can have serious consequences and may be one of the causes of your fatigue. Staying hydrated helps maintain energy levels during physical activity, as well as curbs fatigue after a workout. It also allows our bodies to acquire essential vitamins and minerals from food sources and keep our muscles functioning properly. Experts suggest that athletes drink 3-8 ounces (0.9-2.4 dL) of fluids about two hours prior to exercise, then another 8 ounces (2.4 dL) just before starting their workout. Furthermore, it’s important for athletes to drink about 8 ounces (2.4 dL) for every 15 minutes during exercise depending on how hot it is outside/ how much sweat you are producing from your activity and continue drinking throughout the day after exercise is done especially if you perspire a lot during workouts .

Not Getting Enough Sleep

Exercising regularly can help improve the quality of your sleep, but not getting enough sleep can also have an effect on your exercise routine. When you’re low on quality Z’s, you may feel more fatigued during physical activity and find it harder to do even mundane tasks. Not getting enough rest decreases your body’s ability to recover from a workout, and can lead to a decrease in motivation levels and negatively impact performance. To ensure that your workouts don’t leave you feeling drained and sapped of energy, make sure that you’re getting between 7-9 hours of sleep each night; if possible, add in a brief nap during the day. Getting the proper amount of rest will help ensure that your body is properly recovered from physical strain, so you won’t be feeling as fatigued the next time you hit the gym.

Ways to Combat Fatigue

Working out can be a great way to boost your energy levels and stay active, but sometimes it can leave you feeling just as tired as before. This is because your body is expending a lot of energy during and after a workout. Fortunately, there are a few ways you can combat this fatigue. Let’s delve into them right now.

Increase Caloric Intake

One of the most common causes of fatigue when it comes to physical activity is inadequate caloric intake. It is important for individuals engaging in vigorous exercise to consume a sufficient amount of calories prior to and after their workout. Calories are the body’s main source of energy, so for those feeling fatigued, it may be helpful to increase their caloric consumption—especially if participating in resistance training and weight lifting, which require more fuel than aerobic activities like running or swimming. Eating a well-balanced diet containing carbohydrates and fats will also ensure that individuals have enough nutrients on board for a successful workout. Additionally, calories come from liquids too! Many runners rely on sports drinks or energy gels to keep them fueled while they train and perform. By increasing overall caloric consumption before and after exercise sessions, fatigue can be avoided so that you can stay energized throughout the day.

Increase Hydration

Consuming the proper amount of water is crucial for maintaining energy levels. Without adequate fluid intake, you can suffer from dehydration, which can lead to fatigue and decreased performance. Make sure to stay hydrated by drinking enough fluids while exercising and throughout your day.

It is recommended that adults should drink at least 8–10 cups of fluids per day, but this amount can vary depending on a variety of factors such as temperature, weather, exercise intensity and time spent sweating. Water contains no calories or sugars, so its effects are beneficial for those trying to avoid excess energy intake or maintain a healthy weight. Additionally, water has many health benefits such as maintaining body temperature, lubricating joints, transporting nutrients and detoxification purposes.

If plain water does not suit your taste or help with your hydration needs, consider adding fruit slices or using other “no-sugar” options such as black tea with lemon slices or sparkling mineral water. Try incorporating any of these into your routine if you find yourself thirsting for something different during the day.​

Adjust Workout Intensity

One of the most common reasons that people feel overly tired after a workout is because they are pushing themselves too hard. After all, every workout is different, and it’s important to adjust your intensity to meet the needs of your body on any given day. If you often feel tired after exercise sessions, it may be best to reduce the intensity of them.

You don’t necessarily need to reduce the duration or volume of your workout; just make sure you’re not going too hard during any given session. This could mean walking rather than running, doing fewer reps or sets, or using lighter weights or resistance bands. Doing exercises at a lower intensity can still yield positive results for strength and fitness if done correctly.

Lowering the intensity level of your workout can also help decrease any feelings of cardiovascular fatigue as well as reduce muscle soreness after exercise sessions. Plus, by not pushing yourself so hard every day, you’ll have more energy available for other physical activities during the week, like leisurely walks or bike rides with friends and family – naturally combating fatigue in a healthy way!

Get Adequate Sleep

We all need adequate sleep to function properly and stay alert during the day. This means getting 7-9 hours of quality sleep a night. Sleeping in short bursts throughout the day does not serve as a substitute for solid, full-length sleeps at night. Aim for regular sleep habits and allow yourself enough time to meet your minimum quota of restorative rest each night.

You can also try adopting winding down habits which can signal your body to relax and get ready for bed such as turning off electronics, reading an easy bedtime book, taking a warm bath or shower, or writing in a journal about your thoughts and the events of the day. Additionally, fall into a relaxing nightly routine that works best for you in order to prepare your mind and body for sleeping when you intend to go to bed each night.


In conclusion, it is important to understand that feeling tired and fatigued after working out is a normal physical reaction to the strenuous exercise performed. It is also important to note that many factors can contribute to pre- and post-workout fatigue, from inadequate rest and nutrition to underlying medical conditions. Making sure that you are well-rested, have consumed nutritious food and adequate hydration before exercising, as well as incorporating active recovery into your training plan are all great steps towards getting the most out of your workout without feeling overly exhausted in the process.

Checkout this video:

Similar Posts