How old do your son have to be to come work out

You can join PF starting at the age of 13 with a parent/legal guardian’s permission; they must be present with you during the sign-up process. Members aged 13 and 14 must be accompanied by a parent or guardian when they work out. Members who are 15 to 17 years old must have a signed waiver from a parent or guardian on file.

Your son must be 13-14 to workout at Planet Fitness, with a guardian who is a member.