All Humans have the natural instinct to save another person's life but are they trained and equipped to do so?
What I question is the gym staff's ability to respond.
Aren't they supposed to have some kind of first aid training? I don't think a Gym is allowed to operate without having on duty a First Aid trained staff. To avoid similar unfortunate situations, this accident should be investigated to verify the Gym's compliance and results should be published to the public. Penalties and law reinforcement should be applied to the Gym in case of defaulting with Health & Safety statutory requirements.