#ExerciseSafety

A growing body of research and expert analysis warns that High-Intensity Interval Training (HIIT)—long promoted as the ultimate quick and efficient fitness solution—may pose serious health risks for adults over 50. As Thailand’s population ages, understanding which exercises truly benefit longevity and wellbeing is critical for turning back the clock not just on the surface, but deep within our bodies.

The concern over HIIT and similar high-intensity workouts lies in how older bodies respond to extreme exercise. According to the recent article published by Journee Mondiale (journee-mondiale.com), fitness professionals and medical researchers no longer consider HIIT universally safe for the over-50 crowd. The main culprit appears to be the body’s stress response: HIIT can trigger a surge in cortisol, the so-called ‘stress hormone.’ For adults over 50—especially women undergoing menopause—this cortisol spike may amplify hormonal imbalances, contribute to sleep issues, spark chronic inflammation, and promote fat accumulation around the waist, all maladies already associated with aging. Sports medicine specialists note that the long-term elevation of cortisol could counteract the cardiovascular benefits of exercise, raising the risk of heart problems.

For many fitness enthusiasts in Thailand and around the world, the drive to push harder in the gym is often seen as a sign of commitment. But new advice from leading personal trainers warns that working out to total exhaustion can actually do more harm than good, with experts highlighting clear warning signs – and encouraging approaches – to ensure exercise brings results without risking injury or burnout. As busy lifestyles and social media fitness trends pressure more Thais to seek “maximum intensity,” understanding where to draw the line is critical for long-term health.