I’m only 30, but I found out I have arthritis a few years ago after consulting a doctor for the pain I was experiencing while marathon training. Since then, I’ve been concerned with my bone health, especially because women’s bone density typically peaks around 30, and then starting around the age of 35 we slowly lose skeletal mass every year. I want to keep moving comfortably as I age, so I added a smart scale from Withings to my wellness routine to make sure my bone health stays up to snuff (or, hopefully, improves as I strength train more frequently).

Withings is known for its advanced smart scales that sell for up to $600, but the brand recently launched a more affordable $280 model that piqued my interest. The BodyFit scanner includes a whole-body scan that measures bone and skeletal muscle mass, two metrics that represent the amount of bone tissue you have, as well as the amount of muscle attached to your skeleton. These data points offer a window into your joint and bone health and can help you determine whether proactive steps like adding more weighted workouts or supplements to your routine are needed to keep bones strong.

To see whether a smart scale could truly boost my understanding of my skeletal health, I used it for two months during yet another marathon training cycle, when I’m working out more than ever and presumably increasing my muscle and bone mass. Here’s what happened.