Q&A #24 - Improving and testing aerobic capacity, dealing with 45-minute workout limits, back-to-back long rides, and training the respiratory system   What are the best ways to train to improve aerobic capacity (VO2max) and what's the best way to assess it? How should you structure your training when you're limited to 45-minute workout windows? Is there a benefit of doing back-to-back long rides on the weekend in Ironman training (and move the long run to midweek instead)? Is there a benefit of using various products or techniques to train your respiratory system?   LINKS AND RESOURCES:   That Triathlon Show website  Coaching Training Plans Steve Magness nasal breathing tweet Exercise-Related Transient Abdominal Pain (ETAP) - review article on side stitches FTP, VO2max and VLaMax: what triathletes need to know with Sebastian Weber | EP#169 HIIT Science Course   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 THATTRIATHLONSHOW.     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 Twitter - my handle is @SciTriat.