According to the Fitbit Healthy Futures report, a study on the impact of self monitoring on health and well-being commissioned by Fitbit UK, about half of all adults who self track with a mobile device (like Fitbit) report that they’ve experienced “strong behavior change.” As for whether or not public health campaigns were effective, the overwhelming consensus was negative. Some 63% of respondents agreed with the statement, “I don’t like being lectured and being told what I should be doing.” But 25% of people between the ages of 25 to 34 were open to the concept of motivational prompts on their mobile phones. The study also showed that only one in three people interviewed for the survey felt “at ease” with their bodies, with one in 10 (primarily women) “particularly unhappy with their appearance.” A negative body image correlated with lower levels of performing basic activities like taking a walk in a park, going to the gym or engaging in a sport.

Here’s how tracking can help: The survey noted that people who tracked a daily activity like exercise levels or sleep quality reported a corresponding “uplift” in their sense of well-being, including those who had negative body images.