During years spent advising clients in Switzerland, the UK, Greece, and the US — in recovery programs, private practice, and elite wellness environments — Dr. Kostas Pisios noticed the same pattern repeatedly.  People often had no clear way to understand whether their daily routines were truly supporting them. Some tracked normal metrics while feeling drained or disconnected from their own rhythms. Others focused heavily on isolated measurements — steps, sleep duration, heart rate — without seeing how those pieces connected to how they actually felt day to day.  What seemed missing was a personal wellness level — something that showed where someone stood and whether their daily efforts were actually shifting their balance. That idea became the starting point for Longivy.