Elysium’s analysis of my saliva, which I sent them last year, revealed that even though my biological age matched my chronological age at the time, the ages of my individual systems are all over the place.

My brain was given a biological age of 39, and my liver 42. My hormonal system isn’t looking great either, with an age of 41. On the other hand, my kidneys and inflammation and blood systems are all estimated to have a biological age of 34—slightly below my chronological age. And my heart is faring best of all, with a biological age of 31. Yes, I am officially young at heart.

Presented with these results, I found it difficult to stop my mind from going into overdrive trying to interpret them. My brain must be old because I’m stressed and I don’t get enough sleep. Maybe I drink too much, or I’ve taken too many painkillers over the years, and my liver has struggled to keep up. I have endometriosis—could that have affected the way my body makes and responds to hormones? The young heart comes as a surprise, given that heart problems run in my family. But I’ll take it.

The next step is working out what to do with these results. Elysium offers a set of recommendations for each of your scores. For my old brain, the company recommends I get more exercise, socialize more, get enough sleep, and avoid smoking and alcohol. It also recommends I take the supplements the company sells on its website.

The thing is, I already know I should be getting more sleep and exercise. I’d wager pretty much all of us know this. Is a biological age score going to change our behavior? It won’t for me—if I had the time to exercise and sleep more, I’d be doing it already. I asked Elysium’s vice president of bioinformatics, Dayle Sampson, if knowing his own scores changed anything for him. It hasn’t.

Sampson tells me he’s 38 years old, and according to Elysium’s test, his biological age is 36. But his brain age came out at 43. He thinks he gets too much exercise, which has been linked to an accelerated rate of aging in some studies. Has he cut down since he got his test results? “No,” he tells me.