Petri Karvinen is an age-group triathlete from Finland. In this episode we discuss his build-up to Challenge Roth in 2018, where he was limited to 10 hours of training per week but still managed a very strong 10:30 finishing time.   IN THIS EPISODE YOU'LL LEARN ABOUT: Petri's training approach leading up to Challenge Roth (full distance triathlon) A typical 10-hour training week for Petri Focusing on staying healthy, recovering well, and sleeping well and enough Using STAC's Virtual Wind Tunnel to improve his aerodynamics   SHOWNOTES: https://scientifictriathlon.com/tts150/   THAT TRIATHLON SHOW HOMEPAGE: www.thattriathlonshow.com   SPONSORS: 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!   Stac - The Stac Zero is the world's quietest bike trainer. No noise and no tire wear, since it doesn't even touch the tire! It is also very portable and affordable. Even more so when using the discount code TTS20 for 20% off when you buy your Stac Zero (any of the models).     LINKS AND RESOURCES: Twitter: @ptkarvinen Case Study: Sub-9 Ironman on low-volume, high-quality training with Carl Brümmer | EP#145 Case study: From Blowing Up on a 250 m Swim to Prospective 70.3 Worlds Qualifier | EP#135 Case study: How David qualified for Kona by training smarter and getting the details right | EP#130 Age-group triathlon case study with Jordan and Jesse Sorrick | EP#124 Starting from zero: triathlon age-grouper success case study with Katarina Larsson & André Campos | EP#106   RATE AND REVIEW: If you enjoy the show, please help me out by subscribing, rating and reviewing: www.scientifictriathlon.com/rate/   CONTACT: Want to send feedback, questions or just chat? Email me at mikael@scientifictriathlon.com or connect on Twitter - my handle is @SciTriat.