I would propose something different, think of a fallout style tier chart that lets you share and challenge friends with a monthly reset. Your strength is rated on what workouts you do. Your perception is based on gun target accuracy. Endurance on an exercise amount each day to create a monthly average plus weight check. Charisma is based on time spent physically with others. Intelligence is how many “accomplishments” you accrue that month, books, puzzles, max difficulty games, etc. agility would be much like strength but with hiit and aerobic exercise. Luck would be personal success notes.