The start of a new year offers more than a fresh calendar; it’s a chance to establish health baselines that can shape your trajectory for decades to come. While most New Year’s resolutions fade by February, measurable health metrics give you something far more powerful than motivation alone: clear numbers you can track, improve, and revisit throughout 2025 and beyond.

And, some of the most predictive markers of long-term health don’t require lab work, specialists, or expensive testing. With a bit of space at home (or a nearby track) and, in a few cases, inexpensive tools, you can assess key indicators of longevity without scheduling a single appointment.

These five at-home tests are backed by research as meaningful predictors of healthspan and lifespan, and they’re tools you can start using today.

VO2 max (Cooper test)

What it measures: Your cardiovascular fitness and your body’s ability to use oxygen during intense exercise.

Why it matters: VO2 max is one of the