Greek scientist Apostolos Atsalakis, founder of PNOE, and athlete Alex Wisch join Joe De Sena, founder of Spartan, to talk about metabolism, zone workouts, and VO2 max. Apo is the co-founder of PNOĒ which adapts a breath analysis test that was known for over a century, to allow the mass adoption of metabolic analysis (RMR and VO2Max testing). He graduated from the University of Cambridge, joined Y Combinator with PNOĒ in 2019, and has joined the Fortune 40 under 40 Greek list. He loves windsurfing and strength training. Alex Wisch is the founder of Wisch Fit. During the pandemic he teamed up with Spartan to raise awareness and money for veterans mental health by completing 1000 strict pull-ups, 2000 push-ups and 3000 squats with a 20 lbs vest in about 6 hrs.   Joe De Sena’s Parenting book “10 Rules for Mental Toughness for Families” www.spartan.com/10Rules The Tough Bible - the best information from Spartan Up all in one place Spartan.com/toughbible  More about Apo and PNOE www.pnoe.com This episode of Spartan Up is brought to you by Honey Stinger & CLMBR   CLMBR provides a full body strength + cardio workout with zero impact. Get an efficient workout in only 30min with CLMBR, the most advanced vertical climber ever! Visit https://clmbr.com/ and use the code SPARTAN for $250 off a CLMBR.    Honey Stinger’s waffles, energy chews, gels and bars provide the fuel you need to push harder and go farther. For training and racing, you need convenient nutrition that tastes great and works. Use code HSSpartan2020 at Honeystinger.com for 30% off and Sweeten the burn. FOLLOW SPARTAN UP: Spartan Up on Instagram https://www.instagram.com/spartanuppodcast/ Spartan Up on Twitter https://twitter.com/SpartanUpPod   CREDITS: Producer – Marion Abrams, Madmotion.com Host: Joe De Sena Sefra Alexandra, Johnny Waite & Colonel Nye will be back soon, we miss them! © 2021 Spartan