How much exercise keeps our brains healthy as we age?

New guidelines outline how much physical exercise older Australians concerned about their memory should be aiming for each week, to help maintain brain health

• By Professor Nicola Lautenschlager, University of Melbourne

Staying physically active later in life, by doing around an hour and half of moderate aerobic exercise and a couple of strength training sessions per week, can help keep your brain healthy.

Research has shown that exercise can improve cognitive function in people who are concerned about their memory or have slight memory decline, and can reduce the risk of further decline.

But, until now, there…

• How much exercise…