Experts have long known that extended inactivity can be bad for your body, increasing your risk for heart disease, Type 2 diabetes and other illnesses. As the saying goes, “sitting is the new smoking.” At the same time, decades of studies have shown that walking — even just 4,000 steps a day — is good for the mind and body.

Treadmill desks — a setup involving a standing desk with a treadmill beneath it — seem like an ingenious antidote to sedentary office life, and a way to get in a few more healthy steps. But are they worth the investment?

As treadmill desks have become more mainstream, researchers have begun to ask how effective they are. A growing body of studies, though often limited, suggests they do help keep people moving, adding perhaps an average of two extra miles of walking per day.

What’s more, one small 2023 study suggested regular use of treadmill desks increased people’s energy, improved their moods and, in some cases, even made them more productive at their jobs.

“Having the ability to add in little bits of activity over the course of a day can add up,” said Akinkunle Oye-Somefun, a doctoral candidate at York University in Toronto and the lead author of a recent meta-analysis of treadmill-desk research. However, he noted, “walking on a treadmill desk is an add on, not something meant to replace your regular exercise routine.”

The key to getting the most health benefits out of a treadmill desk, and avoiding boredom or frustration, is to go in with the right expectations and strategy.