Additional Study Information: U.S. Adults spend on average 11 to 12 hours a day sitting. Daily sedentary behavior is strongly associated with the risk of heart disease. The purpose of the BREAK II research study is to answer two questions: (1) How frequently should periods of prolonged sedentary time be interrupted? and (2) What is the appropriate duration or length of time of these breaks in sedentary time? If you are 18 years old or older and have no history of chronic diseases, and no physical disability preventing ability to walk and a non-smoker, you may be eligible for this study. Participants will receive up to $270 for complete participation in this study with the option to receive an additional $175 for complete participation in two optional sub-studies. Please copy this link: tinyurl.com/BREAKII into your browser to learn more and complete our survey to see if you qualify. For more information contact our team!