Is that what I inquired about?
Gym etiquette also includes keeping your mouth shut. No one else at the gym, apart from the staff and personal trainers, needs your advice when it comes to working out. That person has to be notified, and I hope that someone will do so.
His advice to a lady at the gym was to focus on endurance and fat loss rather than weight lifting. A woman’s workout routine is not his business, yet weight lifting burns calories as well.