1. A computer-implemented method comprising: receiving, by a computer device positioned on a body of a user, first data from a first sensor integrated into an item of apparel worn by the user; determining, by a processor of the computer device, a location of the computer device on the body of the user, based on the received first data; receiving, by the computer device, second data from a second sensor integrated within the computer device; receiving, by the computer device, third sensor data received from a third sensor configured to detect a pressure exerted by the user; calculating, by the processor, from the second sensor data and the third sensor data, an initial postural assessment of the user; prompting the user to perform an exercise selected based on the postural assessment and a likelihood of injury to the user; calculating, by the processor, from the second sensor data and the third sensor data, an angle between a first body part and a second body part of the user, based on the determined location of the computer device on the body of the user; determining, by the processor, a form of the user, based on the calculated angle; comparing the determined form of the user to a desired form associated with the exercise; calculating, by the processor, a completeness modifier based on the comparing the determined form of the user to the desired form; and calculating, by the processor, an energy expenditure estimate for the user performing the exercise based on a type of the exercise and on the calculated completeness modifier.