How to Improve Your IQ: 12 Science-Backed Methods
"Can you actually get smarter?" It's one of the most commonly asked questions about intelligence. The answer is nuanced: while your baseline cognitive ability is significantly influenced by genetics (50–80%), there is real room for improvement. Research shows that the right habits and activities can boost cognitive function and potentially raise IQ scores by several points. Here are 12 evidence-based strategies, ranked by strength of scientific evidence.
1. Exercise Regularly (Strongest Evidence)
Aerobic exercise is the single most well-supported intervention for cognitive improvement. Research published in the British Journal of Sports Medicine found that regular aerobic exercise improves executive function, memory, and processing speed. Exercise increases blood flow to the brain, promotes neurogenesis (growth of new brain cells) in the hippocampus, and releases BDNF (brain-derived neurotrophic factor), a protein that supports neural growth.
What to do: Aim for 150 minutes of moderate aerobic exercise per week. Running, swimming, cycling, and brisk walking all count. Even a single 20-minute session can temporarily boost cognitive performance.
2. Get Enough Sleep
Sleep is when your brain consolidates memories, clears metabolic waste, and restores cognitive function. Chronic sleep deprivation can reduce effective IQ by 5–15 points. A study in Sleep journal found that people who slept 6 hours or less performed cognitively like someone who had been awake for 48 hours straight.
What to do: Get 7–9 hours of quality sleep per night. Maintain a consistent sleep schedule, avoid screens before bed, and keep your room cool and dark.
3. Learn a Musical Instrument
Playing music engages virtually every area of the brain simultaneously — auditory, motor, visual, and emotional centers. A meta-analysis of 13 studies found that musical training is associated with enhanced verbal memory, spatial reasoning, and executive function. Children who learn instruments show IQ gains of 2–3 points, and adults who practice regularly maintain sharper cognitive function as they age.
What to do: Pick up any instrument — piano, guitar, drums, violin. The key is regular practice (even 30 minutes a few times per week) that challenges you to learn new pieces.
4. Learn a New Language
Bilingualism has been consistently linked to cognitive benefits including improved executive function, better multitasking ability, and delayed onset of dementia. Learning a language exercises working memory, attention control, and pattern recognition — the same skills measured by IQ tests.
What to do: Use apps like Duolingo to start, but supplement with conversation practice. Even basic proficiency in a second language provides cognitive benefits.
5. Read Challenging Material
Reading, especially complex non-fiction and literary fiction, builds vocabulary, improves verbal reasoning, and exercises working memory. A study at Emory University found that reading fiction creates measurable changes in brain connectivity that persist for days after reading. Reading also builds crystallized intelligence — the accumulation of knowledge and skills.
What to do: Read books that challenge you — science, philosophy, history, or literary fiction. Aim for 30+ minutes of focused reading daily.
6. Practice Meditation and Mindfulness
Meditation has been shown to increase cortical thickness in brain areas related to attention and sensory processing. A study at the University of California found that just 4 days of meditation training improved working memory, executive function, and visuospatial processing. Long-term meditators show preserved brain volume and cognitive function as they age.
What to do: Start with 10 minutes of focused breathing meditation daily. Apps like Headspace or Calm provide guided sessions. Consistency matters more than duration.
7. Optimize Your Nutrition
Your brain consumes about 20% of your body's calories despite being only 2% of your mass. The right nutrients fuel cognitive performance. Omega-3 fatty acids (found in fatty fish, walnuts, and flaxseed) are essential for brain cell membrane structure. Antioxidants from berries and dark leafy greens protect against oxidative stress. Deficiencies in iron, iodine, zinc, or B vitamins can measurably reduce cognitive performance.
What to do: Eat a Mediterranean-style diet rich in fish, nuts, vegetables, fruits, and olive oil. Consider omega-3 supplements if you don't eat fish regularly. Stay hydrated — even mild dehydration impairs cognitive function.
8. Play Strategy Games
Chess, Go, and complex strategy video games exercise planning, pattern recognition, and working memory. While "brain training" apps have limited evidence for broad cognitive transfer, complex strategy games that require adaptive thinking in novel situations show more promising results.
What to do: Play chess online, try strategy board games, or play video games that require planning and adaptive thinking (like Civilization or real-time strategy games).
9. Engage in Continuous Learning
Formal or informal education at any age builds neural connections and maintains cognitive sharpness. Research on cognitive reserve shows that people who engage in lifelong learning maintain higher cognitive function as they age, even in the presence of age-related brain changes.
What to do: Take online courses, attend lectures, learn new professional skills. The key is novelty — learning things you don't already know forces your brain to build new pathways.
10. Manage Stress
Chronic stress floods the brain with cortisol, which impairs memory formation, reduces hippocampal volume, and degrades executive function. Sustained high stress can effectively lower cognitive performance by several IQ points.
What to do: Develop stress management habits — exercise, meditation, social connection, therapy, time in nature. Address sources of chronic stress when possible.
11. Stay Socially Connected
Social interaction is cognitively demanding in the best way — it exercises language processing, emotional reasoning, perspective-taking, and real-time adaptation. Studies show that socially active older adults maintain higher cognitive function and have lower dementia risk.
What to do: Maintain friendships, join clubs or groups, engage in discussions and debates. Quality social interaction is mental exercise.
12. Reduce Alcohol and Avoid Drugs
Heavy alcohol use and recreational drug use impair cognitive function both acutely and chronically. Even moderate drinking has been associated with reduced brain volume over time. Cannabis use during adolescence is particularly harmful for cognitive development.
What to do: Minimize alcohol consumption. If you drink, keep it moderate (1 drink/day or less). Avoid recreational drugs, especially during brain development (before age 25).
What About Brain Training Apps?
Despite billions in marketing, most brain training apps (Lumosity, Elevate, etc.) have disappointing evidence. A large-scale study published in PNAS found that training on specific cognitive tasks improves performance on those exact tasks but does not transfer to broader cognitive ability or IQ scores. The consensus: brain training makes you better at brain training, not smarter in general.
Your time is better spent on the activities above — especially exercise, music, languages, and reading — which have stronger evidence for general cognitive improvement.
Be Realistic About Expectations
Implementing all of these strategies can optimize your cognitive function and may improve IQ scores by 3–10 points over time. However, transforming an average IQ into a genius IQ is not realistic. Think of these strategies as ensuring your brain operates at its best rather than fundamentally changing your cognitive ceiling. The practical benefits — better memory, sharper focus, faster learning — are valuable regardless of how they show up on a test.
Frequently Asked Questions
Can you actually increase your IQ?
Research suggests modest IQ improvements (3–10 points) are possible through lifestyle changes. Exercise, sleep, learning new skills, and proper nutrition all support cognitive function. Dramatic increases in adulthood are unlikely due to the strong genetic component.
Do brain training apps increase IQ?
Most research shows brain training apps improve performance on their specific tasks but don't reliably transfer to broader IQ gains. Exercise, music, and language learning are more effective.
What activities increase IQ the most?
Regular aerobic exercise has the strongest evidence, followed by learning a musical instrument, learning a new language, reading challenging material, and getting adequate sleep.
Curious where you stand right now? Take our free IQ test to get your baseline score. Then revisit in a few months after implementing these strategies. Learn more about what IQ measures and what different scores mean.