Abstract: A computer-implemented method for diet performance tracking includes receiving one or more diet performance parameters from a first user and displaying these one or more diet performance parameters at a first user device. It also includes displaying, at the first user device, one or more diet challenges and receiving a selection from the first user, at the first user device, of a diet challenge. After receiving the selection of the diet challenge, the method includes displaying, at the first user device, video and audio content corresponding to the selected diet challenge. Also after receiving the selection of the diet challenge, the method includes displaying, at the first user device, one or more diet performance parameters received from the first user and displaying, at the first user device, one or more diet parameters corresponding to a second user at a location remote from the first user.