If you want to get more exercise and physical activity, try wearing a fitness tracker. In a new study published in the journal Lancet Digital Health, Australian researchers compiled data from almost 400 studies that included data on wearable activity trackers and the physical activity habits of roughly 164,000 people. They found that using these fitness trackers increased people’s physical activity, such as daily walking, by as much as 40 minutes per day. They also found health benefits to this increased physical activity, including weight loss, lower cholesterol and blood pressure, and decreased anxiety and depression.