Alexi Pappas has one impressive resume. Greek-American runner. Author. Actress. Olympian. Greek national record holder in the 10,000 meters set at the 2016 Summer Olympics. There’s not much this woman hasn’t done. And there’s no limit in sight for what she will achieve in her life. But her accomplishments, drive, and perseverance weren’t possible without consistent recalibration and self-check-in. Alexi wanted objective, science-backed indicators to measure and evaluate her performance, health, ...