Liu et al. have published a new study in the journal of  Physiological Reports demonstrating how Astaxanthin supplementation enhances metabolic adaptation with aerobic training in the elderly. Endurance training (ET) improves metabolic health and aerobic capacity. However, ET-induced adaptations may be suboptimal due to oxidative stress and exaggerated inflammatory response to ET in elderly population. The natural antioxidant and anti-inflammatory dietary supplement astaxanthin (AX) was able to bridge the gap between suboptimal training effect to achieve optimal health benefits in older population: To increase fat oxidation and exercise efficiency.