If you've recently put your slippers in the fridge and are worried that your grey matter isn't getting enough stimulation, then keep reading.
“The brain, just like the body, needs exercise as well as periods of rest," says Deborah Stone, MD of My Ageing Parent.
"And just as you wouldn’t do just one exercise to keep physically trim and fit, the same is true with keeping mentally alert and on top of your game."
"Variety is key," says Stone. "Always remember: use it or lose it!”
A recent study found that getting older does not necessarily mean losing brain power.
In fact, the research by Massachusetts General Hospital's Center for Human Genetic Research found we all peak at different times, with many of us reaching the height of our powers in our 60s, 70s and beyond.
Stone tells HuffPost UK Lifestyle that the brain is a muscle and with regular "exercise", it will become "fitter" while also improving memory function.
She adds: "It could prevent dementia, but there is no guarantee. Using your brain as a muscle is the same as using any other muscle in the body. If you work it, you stimulate it and make it perform better."
So without further ado, here are 10 ways you can do just that.