[header] How to get kids interested in running [title] Don't over-criticize. [step] The quickest way to make a kid lose interest in an activity is to continually criticize how they perform that activity. When they're first getting involved with running, don't criticize their form or speed (or lack thereof). 
Instead, emphasize the fun they're having. [substeps] For example, if you notice that their form needs work, sandwich it between two positive comments.