Long-Lasting Effects of Lifestyle
Sleep, exercise, heart rate, and mood can impact our brains for up to two weeks, according to a study by Finnish researchers. They tracked one person’s brain and behavior for five months using brain scans, wearables, and smartphones.
“We wanted to look beyond one-time events,” says lead researcher Ana Triana. “Our mental states are constantly shaped by our environment and experiences, but we know little about how brain connectivity responds over different timescales.” The study found that our brains don’t react to daily life in isolated bursts. Instead, brain activity gradually shifts in response to factors like sleep, physical activity, mood, and heart rate over days. This means a workout or poor sleep from last week could still be influencing attention, memory, and cognition today. Physical activity was shown to improve brain connectivity, potentially benefiting memory and cognitive flexibility, while mood and heart rate changes left lasting effects for up to 15 days. The study also suggests tracking brain changes in real-time could help identify neurological disorders early, especially in mental health where subtle signs are often missed.
“Linking brain activity with physiological and environmental data could change personalized healthcare, enabling early intervention and better outcomes,” concludes Triana.