Abstract: A computerized method includes identifying a first routine of a first user and determining an alteration for the first routine. The alteration can be determined based at least in part on a second routine, where the second routine corresponds to a second user. In addition, or instead, the determining may be based at least in part on generating and selecting one or more alterations and/or selecting one or more enumerated alterations for the first routine. The first routine can be simulated with the alteration to predict a first performance score with respect to multiple future iterations of at least the altered first routine. The alteration may be selected for the first routine based on the prediction of the first performance score and a second performance score with respect to at least the unaltered first routine. The selected alteration for the first routine may be presented to the first user.