For her 80th birthday, she went to trapeze school. For her 90th, she threw a house party. E.J. Truax says the secret to thriving into old age is simple: Be active. And it turns out, research backs her up.

How to get stronger as you age

Post Reports is the daily podcast from The Washington Post. Unparalleled reporting. Expert insight. Clear analysis. Everything you’ve come to expect from the newsroom of The Post, for your ears. Martine Powers and Elahe Izadi are your hosts, asking the questions you didn’t know you wanted answered. Published weekdays around 5 p.m. Eastern time.