From the Post: For some parents, using a personal trainer to get their kids in shape is worth the cost. In this week’s MisFits column, Lenny Bernstein describes how a trainer helped one local teen lose 75 pounds and what parents should know before getting a personal trainer for their children. (MisFits)

Online chat: Today, exercise physiologist Fabio Comana will host a live discussion at noon about using trainers to help kids stay fit.

Follow @onparenting on Twitter.