Having a gym membership revoked is something that is usually reserved for those people deliberately contravening rules put in place for a good reason.
Anyone who has frequented their local gym or sports club will be all too aware of the nuisance caused by those lazily leaving weights lying around or neglecting to wipe their sweat off equipment.
Causing health and safety hazards is one thing, but poor Krista Grubb had her membership revoked for an altogether more innocuous reason.
As a very busy working mum, Krista felt it would be best for her family if she accompanied her 13-year-old son to help him exercise.
With Grubb being a personal trainer herself, she was in a perfect position to be able to assist and guide her inexperienced son Mason begin to lift weights at LA Fitness gym in Palm Harbor, Florida.
"I was really excited to have him come in and lift and see the changes in his body that I saw in mine," Grubb told WTVT Fox.
"Through lifting weights and just working out, I gained a lot of confidence."
Indeed, Mason enjoyed it himself and said: "It was a good like, bonding time for me and my mum."
At first it seemed the most natural and normal thing in the world to the pair - but that was until an issue was flagged up regarding a gym policy prohibiting outside trainers, despite the fact that this was a mother-son family situation.
"One of the trainers approached me and asked me what I was doing. I told her I was working out with my son," she said.
When Krista returned the following day, she discovered to her horror that her membership at the gym had been instantly revoked due to her situation being seen as that of a trainer and client.
She recalled: "They said, ‘Well, the notes here say that you were training people here and we have trainers that you know our customers pay.'"
"With it being my son and we're working out together. I just, it's insane, like it’s just, it’s insane."
Her son, Mason, added: "I think it’s pretty ridiculous that they would take her membership away."
The gym's management have been reportedly unavailable for comment, while Grubb has been unable to receive a refund in any form.
Do you think it was fair for the gym to enforce their rule despite this being a case of a mum helping her 13-year-old son in what can be an intimidating environment or is this a common-sense failure? Post your views below...