US Patent 10188347 Energy expenditure device

Athletic activity may be tracked and monitored while providing encouragement and maintaining an individual's interest in continuing to perform athletic activity. For example, energy expenditure values and energy expenditure intensity values may be calculated based on the duration and type of activity performed by an individual. These values and other movement data may be displayed on an interface in a manner to motivate the individual and maintain the individual's interest. Other individuals (e.g., friends) may also be displayed on an interface through which a user's progress is tracked. This may allow the user to also view the other individuals' progress toward completing an activity goal and/or challenge.