As we all get ready to commit to our New Year’s resolutions, it’s worth knowing how and why our habits form. While we all start the new year with good intentions and gym memberships, we often overestimate how easy we think it will be to form new habits or break old ones. From the 21-day rule to why we prefer eating chips to hitting the gym, the Rundown does the research to get you ready for your new year, new you.