Prior to departing the lab, participants will be instructed on the use of an accelerometer-based activity monitor (20 min), which they will wear for 1 week prior to the desk intervention. During the activity monitor collection week, participants will also be instructed to wear a heart rate belt (non-invasive chest strap) for one day during working hours only (at least 4 hours of data collection) which will be analyzed after the strap is returned to the lab. Participants will then answer an online questionnaire about his/her current physical activity and sedentary behaviors. https://docs.google.com/forms/d/1fjz5ua47KzcdnhCAN7wCDGNbvy-tKSGgZKGGhIKSqQg/viewform?usp=mai l_form_link . A similar questionnaire will be used for post- intervention follow-up with the tenses changed and questions about "anticipated" desk use altered to report on "actual" use (participants in the control group will be asked to answer "not applicable" for any questions related to standing desk use on the follow-up questionnaire).