Q&A #50 - Antioxidants and endurance training; Time in Zone vs. Modified Session Goal approach What is the relation between antioxidants, antioxidant requirements and endurance training? Can antioxidant supplementation impair training adaptation, and should we avoid antioxidants?  If I want to calculate my Time in Zone (TiZ) for a workout, what approach is recommended?  How do I find the balance between running that is easy enough that my heart rate stays low, but not too easy so it's just a shuffle with poor form?     LINKS AND RESOURCES:   That Triathlon Show website  Coaching Training Plans Exercise is the best antioxidant Oral administration of vitamin C decreases muscle mitochondrial biogenesis and hampers training-induced adaptations in endurance performance. Exercise and oxidative stress: significance of antioxidants with reference to inflammatory, muscular, and systemic stress Exercise-induced oxidative stress: cellular mechanisms and impact on muscle force production Reactive oxygen species: impact on skeletal muscle Scientific Triathlon Training Zones Calculator     SPONSORS: ROKA - The finest triathlon wetsuits, apparel, equipment, and performance eyewear on the planet. Trusted by Javier Gómez, Gwen Jorgensen, Flora Duffy, Mario Mola, Lucy Charles and others. Get 20% off your entire order with the discount code TTS.   Precision Hydration - One-size doesn't fit all when it comes to hydration. Take Precision Hydration's FREE sweat test and learn how you should hydrate. Use the discount code THATTRIATHLONSHOW and get your first box for free!    RATE AND REVIEW: If you enjoy the show, please help me out by subscribing, rating and reviewing.    CONTACT: Want to send feedback, questions or just chat? Email me at mikael@scientifictriathlon.com or connect on Instagram, Facebook, or Twitter.