10 Benefits of Exercise on the Brain: How to Boost Cognitive Function Through Movement

The brain is often described as the most complex structure in the known universe. It stores memories, regulates emotions, processes information, controls movement, and makes thousands of decisions every day. 

Remarkably, exercise has been shown to influence many of these functions at once.  

From memory and focus to stress management and cognitive performance, movement triggers changes throughout your brain that can support both short-term function and long-term health. In this guide, we’ll break down 10 benefits of exercise on the brain, the science behind them, and why F45 workouts and brain health go hand in hand. 

How does exercise affect the brain?

When you exercise, your heart rate rises and blood flow to the brain increases – delivering more oxygen and the nutrients your brain needs to function at its best¹.   

You might feel it as a mood lift, a burst of clarity, or that satisfying sense of calm after a challenging F45 workout. This is your brain releasing neurotransmitters – chemical messengers including dopamine, serotonin, and endorphins – that regulate everything from your mood and motivation to focus and memory¹. 

10 benefits of exercise on the brain

Most people exercise to change how their body looks. What they don’t realize?  

That every session is doing something equally powerful to their brain.   

Below, we’re breaking down the 10 benefits of exercise on the brain and what each one means for how you think, feel, and perform every day. 

1. Improves memory

You probably already have an idea that exercise can grow your muscles. But did you know it can grow your brain, too? 

Exercise has been shown to increase the size of the hippocampus – the region of the brain involved in forming and storing memories. In one study, adults who exercised regularly showed a 2% increase in hippocampal volume², which can support sharper recall of names, facts, and learned skills. 

So, if you have a test coming up, swap the last-minute cramming session for an F45 workout beforehand instead! 

2. Enhances focus and concentration

While most people reach for a coffee to feel sharper, exercise can also support focus and attention. In fact, just 30 minutes of exercise has been shown to boost your ability to focus by up to 30% for up to two hours afterward, thanks to a surge in neurotransmitters like norepinephrine and dopamine that prime the brain for attention³. 

And if you use exercise for cognitive function consistently, research shows you can improve your focus by up to 15% in the long run³. 

3. Supports faster learning

Another benefit of physical activity on the brain is that it triggers the release of BDNF (brain-derived neurotrophic factor). Often described as “fertilizer for the brain”, BDNF is a protein produced in the brain and nervous system that helps form the neural connections needed for learning. Studies consistently find that people who exercise before a learning task retain information better than those who don’t¹. 

For students, you may find it better to work out in the morning before class than to cram the night before – it helps your brain feel more switched on and ready to absorb new facts. 

4. Boosts mood and emotional regulation

5. Reduces stress levels

When you’re stressed, burned out, or running on empty, your brain physically shifts into survival mode. Your prefrontal cortex (that part we just touched on, which is responsible for rational thinking) goes quiet. Your amygdala (the threat detector) takes over. And your body floods with cortisol (stress hormones) – making even small problems feel tough to manage.  

Physical activity helps your body metabolize excess cortisol more efficiently, so everyday pressures feel less overwhelming and easier to shake off. Group exercise, in particular, has shown a 26.2% reduction in perceived stress levels⁵.  

Want to try it for yourself? Find your nearest F45 studio and start a trial. With expert coaches and a supportive community, it’s easier to build habits that benefit both body and brain.  

6. Supports long-term brain health

Studies show that exercising during midlife can lower the risk of dementia by 41% – and the window between 45 and 65 is when the brain is most responsive to those protective effects⁶.   

That’s why strength training for 45+ men – and resistance workouts for women over 45 – is one of the most powerful investments you can make in your longevity. Muscle mass, hormones, and cognitive function all decline at this stage and – left unchecked – can compound. Strength training directly counters this: reducing inflammation, improving blood flow to the brain, and supporting memory. And if you continue to prioritize exercise and brain health, you can keep building muscle mass past your 60s – and beyond! 

7. Improves sleep quality

The connection between sleep quality, exercise, and health can’t be overstated. 

Regular exercise helps regulate your circadian rhythms – the internal body clock that tells your brain when it’s time to sleep and when it’s time to wake – training your body to follow a more consistent, natural sleep pattern. Studies show a staggering 65% improvement in sleep quality within just 16 weeks of consistent exercise⁷. And since deep sleep is when your brain repairs itself, better sleep means sharper thinking the next day.  

If sleep is something you struggle with, learn more about the different types of rest and how to use them to get the full benefits of physical activity on the brain. 

8. Increases mental energy

Ever wonder why brain fog hits hardest in the afternoon? It’s because your mitochondria (the energy-producing powerhouses inside your cells) are running on empty. The good news? Exercise recharges them – while boosting circulation and oxygen delivery to the brain.   

It’s why you’ll find that a midday F45 workout (or even just a quick walk around the block on your lunch break) will do more for your mental clarity than that third coffee will.  

9. Enhances decision-making and reaction time

Think about all the times you need to react quickly in everyday life – be it braking suddenly, making a snap decision under pressure, or catching your brand-new iPhone before it hits the ground. Your performance in these moments is dictated by your prefrontal cortex, and you can train it to respond faster through high-intensity cardio, strength work, and explosive sprinting⁸ – all movements you’ll find in our workouts here at F45. 

10. Supports confidence and mental resilience

Every time you push through a hard workout, your brain registers a small but meaningful win – reinforcing the belief that you’re capable of hard things. (Because you are!)  

But this isn’t just motivational language. Neuroscientists call this a positive feedback loop. Each small success rewires your brain to expect more success, which raises your baseline confidence over time. Eventually, that physical confidence won’t be limited to the gym. It’ll have bled into how you navigate setbacks at work, handle a difficult conversation at home, or simply show up in moments that would have previously felt overwhelming. 

What type of exercise is best for brain health?

Exercise and brain health aren’t one-size-fits-all. Read on to discover how each F45 format supports your brain in a different way. 

Aerobic exercise (cardio)

Our cardio workouts are built around short, intense intervals followed by recovery periods – keeping energy high while pushing your aerobic capacity.  

“Expect rowing machines, bikes, and bodyweight movements that spike your heart rate and leave you feeling amazing,” says F45 athlete John Karpathakis.  

The benefits of aerobic exercise for brain health include: 

• Increasing blood flow to the brain, helping improve focus and mental clarity.  

• Encouraging the growth of new brain cells, strengthening memory and learning. 

• Improving the brain’s ability to use oxygen efficiently, supporting sharper thinking. 

Resistance training

Resistance workouts move at a steadier pace, focusing on compound exercises that engage multiple muscle groups. 

“F45 resistance workouts help you build muscle, focus on form, and gain confidence around weights,” says John. “Expect kettlebells, dumbbells, barbells, and Y-bells in a structured circuit format that progressively challenges and develops your muscle endurance.” 

Strength work helps your brain:  

• Increase brain chemicals that support motivation, focus, and mood. 

• Build stronger connections between brain cells, helping you learn and adapt. 

• Strengthen the area of the brain responsible for decision-making and self-control. 

Hybrid workouts

“Our hybrid workouts blend high-intensity cardio with targeted resistance, agility, and core movements,” continues F45 athlete John. 

Strategically programmed for maximum efficiency in a single, total-body workout, hybrid training at F45 trains your brain to switch quickly between movements and intensity levels – supporting memory retention, focus, and decision-making over time. 

If you’re interested in using exercise for cognitive ability, the F45 Challenge is the perfect way to stay accountable – and stay moving. To read more, learn how to change your fitness mindset with the F45 Challenge – and sign up for the next Challenge at a studio near you.