Abstract Exercise is a powerful tool in preventing and reducing the occurrence of lifestyle diseases. However, engaging in intense physical activity, especially activities that are unfamiliar, can increase the risk of heart complications, particularly in individuals who are not very physically active. The number of health clubs is growing, leading to a significant increase in the number of fitness trainers who provide guidance and motivation during workout sessions. As a result, it is crucial for fitness center trainers to minimize complications by prescribing personalized workout regimens and promptly addressing any incidents. A cross-sectional study was conducted on gym trainers who had a basic level certification lasting 6 months or more and at least 1 year of experience, using convenience sampling. Trainers with medical or paramedical qualifications were excluded. A questionnaire designed by the researchers was distributed among the gym trainers. Descriptive data analysis was performed using Microsoft Excel to calculate the percentages. The study found that 51% (120) of the participants were knowledgeable about chest pain, while only 14% (32) were aware that light-headedness and tiredness were symptoms indicating possible cardiovascular events. This implies that the trainers surveyed had limited knowledge. In terms of attitude, when asked about their confidence in recognizing symptoms of a heart attack, only 2% were very confident, 38% were neutral, and 8% were not confident at all. Only 38% of trainers practiced risk stratification/pre-exercise screening, and only 44% followed the guidelines set by the American College of Sports Medicine (ACSM). The study suggests that certified gym trainers lack sufficient knowledge, possess a neutral attitude, and do not frequently implement preventive measures related to exercise-related acute cardiovascular arrest.