Jigsaw puzzles improve both how the brain works and your overall mental state and mood.
First up, puzzles help build what's known as cognitive reserve. This is your brain's ability to improvise, adapt, and find alternative ways to complete tasks. This naturally declines as we age, but regularly challenging your brain can slow down that process.
Puzzles are also one of the best-evidenced ways to sharpen visuospatial reasoning - your ability to judge shapes, distances, and how things fit together. They are just as good at challenging your working memory too. This cognitive function helps us to problem solve and link new information with what we already know. A good example of this is holding a mental image of the finished picture in your mind whilst your eyes scan the loose pieces. Like cognitive reserve, working memory naturally declines with age, but it responds well to regular training.
Puzzles are also the focus of a growing number of clinical trials. Researchers have found a link between engaging in intellectual activities, like puzzles, and a reduced risk of Alzheimer's and dementia. And for people who already have dementia, puzzles have shown promise in helping preserve the cognitive function they still have.
Puzzling doesn't just help your brain function better, it can improve how you feel too. Just 30 minutes of puzzling has been shown to lower the stress hormone cortisol. It also releases dopamine, a chemical in the brain often referred to as the happy hormone. Every time you click a piece together, the brain gets a small reward, which is part of what makes puzzling so satisfying.