Centenarian Decathlon.

In Outlive (2023), Peter Attia introduced the Centenarian Decathlon as a thought exercise turned training prescription. The premise: if you want to enjoy your 90s and 100s — not just survive them — what are the 10 physical things you need to be able to do? Then work backwards: given a roughly 30-year decline curve from your 50s to your 80s, what level do you need to hit *today* so that 30 years of decline still leaves you above the line?

The "decathlon" framing isn't literal. Attia's point is that aging is a multi-system phenomenon: strength alone is not enough, endurance alone is not enough, mobility alone is not enough. The 10 tasks span four pillars — stability, strength, endurance, mobility — because all four degrade with age, and any one of them failing first will gate your independence.

Most fitness goals are framed as the current snapshot: "I want to deadlift 2x bodyweight." The Centenarian Decathlon flips this — start with the version of you at age 85 who needs to climb stairs without a rail, lift a grandchild, get up off the floor unassisted. Then work back to what your 50- or 60-year-old self needs to be doing today to make that the easy outcome.

The math is brutal but useful: peak strength is at age 30, then declines roughly 1–2% per year accelerating after 60. VO2 max declines 10% per decade after 25 in sedentary adults, 5% per decade in trained adults. Grip strength loses 1–3% per year after 50. If you are at 80% of your sport-specific peak today at 45, and you do nothing, you will be at ~50% by 70 and ~30% by 80 — below the line for most decathlon tasks.

The decathlon is graded as a *minimum*, not an average. A 9/10 score with one pillar failing is not "passing" — it means one system will gate your independence. If you fail balance, falls take you out. If you fail squat depth, getting off the floor takes you out. If you fail VO2 max, climbing the stairs to the second floor becomes a daily oxygen debt.

Treat the weakest 1–3 tasks as your training priority for the next 12 weeks. Most adults gain the fastest on the metrics they neglected longest — a sedentary deadlifter who has never done Zone 2 cardio will see VO2 max jump 10–15% in 8–12 weeks of structured aerobic work. A pure endurance runner who has never done strength work will see grip and squat strength climb similarly fast.

Attia's four-pillar weekly default: 2–3 Zone 2 sessions (45–60 min each, conversation pace, mitochondrial work), 1 VO2 max interval session (Norwegian 4×4 or similar), 3 full-body strength sessions (compound lifts: squat, hinge, push, pull, carry), and daily 5–10 minutes of mobility work (hip/shoulder/ankle range). A weekly "loaded carry" session (farmer carries, weighted hikes, sandbag work) covers the carry tasks.

Specific to the weakest decathlon tasks: dead hang weakness → 3× weekly hangs to failure, plus rows and pull-ups. Sit-to-rise weakness → daily hip mobility flow + bodyweight squat practice + single-leg work. Wall sit weakness → 3× weekly Bulgarian split squats + Spanish squats. Push-up weakness → daily 4×max push-ups, progress over weeks. The pattern: train the specific weakness 3–4× per week with low volume, alongside the general training plan.

It is not a medical diagnostic. A poor score does not predict your mortality date; it predicts the buffer you have. It is not a sport — there is no leaderboard, no competition. It is also not exhaustive: cognitive function, balance under cognitive load, recovery capacity, and metabolic flexibility are not in the 10-task list but matter equally.

The score is also not static. Most adults can shift their decathlon score by 3–5 tasks in a year of structured training. The decathlon is meant to be re-tested every 6–12 months — it is a training compass, not a one-time benchmark.