How Well Are You Aging? 4 Simple Physical Tests May Tell You More Than You Think

When we think about healthy aging, most of us think about things like blood pressure, cholesterol, weight, or how many steps we get each day.

But what about something as simple as how quickly you can stand up from a chair?
Or how long you can stand on one leg?

New research suggests that these simple measures of physical function may tell us quite a bit about how well we're aging.

A Large Study Looked at Fitness — Not Just Exercise

A study published in JAMA Network Open in August 2026 followed more than 13,000 adults age 65 and older for approximately seven years.

Instead of simply asking people how much they exercised, researchers actually tested different components of physical fitness, including:

• Balance and agility
• Lower-body strength
• Cardiovascular endurance
• Upper-body strength
• Flexibility

The strongest associations with longevity weren't necessarily the things people often focus on, such as flexibility.

Balance, mobility, leg strength, and cardiovascular fitness stood out.

Participants who performed in the highest group on several of these tests had substantially lower rates of death during the follow-up period compared with those in the lowest-performing group.
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That doesn't mean performing well on a chair-stand test guarantees you'll live longer. This type of study shows an association, not cause and effect.

But it reinforces something physical therapists see everyday:

Maintaining your ability to move well matters.

Four Simple Tests Used in the Study

1. The 30-Second Chair StandSit in a chair, cross your arms over your chest, and see how many times you can fully stand up and sit back down in 30 seconds.

Simple? Yes.

Easy? Not necessarily.

This test gives us a quick look at lower-body strength and functional capacity. Those are the same muscles you rely on to climb stairs, get off the floor, walk uphill, and remain independent.

2. Single-Leg Balance

Stand on one leg and see how long you can maintain your balance safely.

Balance requires much more than a good inner ear. It involves strength, sensation, coordination, reaction time, vision, and your nervous system working together.

The ability to balance becomes increasingly important as we age because a loss of balance increases the risk of falls and injury.

3. The Up-and-Go Test

Stand up from a chair, walk a short distance, turn around, return to the chair, and sit back down.

It sounds almost ridiculously basic.

But think about everything your body has to accomplish: generate enough leg strength to stand, accelerate, walk, turn, control your balance, slow down, and safely sit again.

That's a lot of information packed into a few seconds.

4. The 2-Minute Step Test

Participants also performed a two-minute stepping test to estimate cardiovascular fitness.

Cardiovascular fitness isn't just about running marathons or riding a Peloton. It's your body's ability to tolerate activity without becoming excessively fatigued.

Being able to walk through an airport, climb stairs, play with your grandchildren, hike, travel, or simply get through a busy day all require a certain level of cardiovascular capacity.

The Bigger Message: Don't Just Count Steps

Walking is fantastic exercise, and getting more daily movement is almost always a good thing.

But walking alone doesn't challenge every component of physical fitness.

As we age, we also need to intentionally maintain:

Strength. Balance. Power. Mobility. Cardiovascular fitness.

That means occasionally getting out of the comfort zone of simply accumulating steps.

Lift something.

Practice your balance.

Climb some stairs.

Walk faster.

Get up and down from the floor.

Strengthen your legs.

Your body adapts to what you ask it to do. If you stop asking it to be strong, powerful, or balanced, those abilities tend to decline.

It's Not About Becoming an Athlete

Healthy aging doesn't require six days a week in the gym.

The goal is maintaining enough physical capacity that everyday life stays easy.

You want enough strength that getting out of a chair isn't a challenge.

Enough balance that stepping off a curb doesn't make you nervous.

Enough endurance that a vacation doesn't exhaust you.

And enough reserve that when illness, injury, or surgery temporarily knocks you backward,
you have something to fall back on.

That's really what fitness gives us: physical reserve.

And the encouraging part is that strength, balance, endurance, and mobility can all be trained at virtually any age.

If you've noticed that you're slowing down, becoming less confident with your balance, having trouble getting up from chairs or the floor, or simply aren't sure where your current fitness level stands, a physical therapist can objectively assess these areas and help develop an appropriate plan.

Don't just add years to your life. Work on maintaining the physical ability to enjoy them.