Running | Runners | Run on Instagram: "🙌 You can check how to get your photos/videos promoted in our Instagram page, use the link in our bio: @RunningTerritory As you probably know, I live in the highest city in Europe all year round, and right now I’m back in my hometown in Spain at the beach for Christmas. I’ve always noticed how much living at altitude affects my body, especially my resting heart rate and VO₂ max. Endurance training helps keep your resting heart rate low because your heart b