Unlike boxing, which relies on punches, or kickboxing, which focuses mainly on fists and feet, Muay Thai employs eight points of contact. Because nearly every major muscle group is engaged during training, Muay Thai is often described by sports scientists as one of the most complete full-body workouts. Why Muay Thai has become a global fitness trendOver the past two decades, Muay Thai gyms have expanded far beyond Thailand. I thought I'd try something new there, so I started Muay Thai training at FitKoh in Koh Samui. A martial art finding new relevanceMuay Thai has travelled a remarkable distance from the battlefields of ancient Siam.