Apple has unveiled the Watch Ultra 3 featuring non-invasive blood glucose monitoring, a breakthrough technology that could revolutionize how athletes and fitness enthusiasts track nutrition and performance.

How It Works

The watch uses a combination of infrared spectroscopy and photoplethysmography to measure blood glucose through the skin without a needle. Accuracy is within 10% of traditional finger-prick methods.

Fitness Applications

Real-time glucose data allows users to optimize fueling during workouts, prevent bonking during endurance events, and fine-tune their nutrition for body composition goals.