Before you read this, please stand up.

I mean it.

Not kidding. I insist.

If you did it, you just took a test that claims to predict how long you'll live.

If you didn't, I guess you'll never know.

I took it too and passed it. But by the end my arms were out and I was staring hard at a fixed spot on the wall.

I'm always curious where a claim like that comes from, so I went and read the actual study.

The claim traces back to a 2022 study, where researchers had 1,702 people between 51 and 75 try the same thing.

Stand on one leg, rest the other foot against the back of your standing leg, arms by your sides, eyes fixed on a point about two metres ahead.

You get three tries to hold it for ten seconds, and you can't lean on anything.

One in five of them couldn't do it.

But that number hides how sharply it climbs with age. 

• Failure was 4.7% among people in their early 50s.
• By the early 70s, it was 53.6%.
• Somewhere past 70, the odds flip from mostly-pass to mostly-fail.

The researchers tracked everyone for a median of 7 years afterward. Of the people who could hold the pose, 4.6% had died by the end of it. 

Of the people who couldn't, 17.5% had.

Compare those two directly and failing the test looks 4.5x as risky. But the people who failed were also older, who die more often regardless of how they balance. 

Adjust just for age, and the 4.5x drops to about 2.2x.

Adjust further for gender, BMI and health conditions like diabetes and heart disease, and it settles at 1.8x. 

The authors were upfront about what the study couldn't see.

It didn't track exercise habits, smoking, medication use, or fall history for any of the 1,702 people, any of which could explain some of that remaining risk on its own. 

Everyone in the study was white and from a relatively high-income group in Brazil, so we don't know how the result applies to other populations.

The weaker leg drops fastest, by about two seconds every decade. If one side felt shakier just now, that's normal.

The reason to care about balance day to day isn't the mortality number.

It is the falls.

An older American study tracked adults over 60 for three years. Anyone who couldn't hold one leg up for even five seconds was more likely to have a fall bad enough to cause an injury.

Since then, researchers have been looking for one test that reliably predicts falls.

They haven't found it.

Balance is just one input, alongside muscle strength, eyesight, medication side effects, reaction time, and the floor someone's walking on. 

A test done standing still in a clinic isn't quite the same thing as catching yourself on an uneven step in the dark, which is closer to how most falls happen.

That matters more in India than most places. 

The 60+ population here is set to more than double by 2050.

A major Cochrane review pooling more than a hundred trials found that exercise programs cut how often older adults fall by close to a quarter.

But not all the exercise earned that equally. 

Programs built around balance and everyday movement had the clearest effect. 

Tai chi helped too. Balance work combined with strength training did best of all. For weights or walking on their own, there isn't enough evidence to say. 

The exercises that worked best challenged balance, and people kept at them over months. 

There is no income cutoff and knee replacements are included.

If you want to try the original test yourself, stand near a wall or counter without holding it, have someone next to you the first time, and stop the moment you feel unsteady. 

If you feel dizziness or an unstable gait, visit a doctor.

If you made it through the intro on one leg, congratulations. You're not dying.

(That's not what the study says but I'll let you have it.)

If you wobbled, you're not dying either. You just found something to work on.

I found the same thing. I train for strength and endurance, but nothing I do challenges my balance.

So I'm adding that, starting this week.

Hit reply and tell me about a health 'test' or a myth you believed for years before finding out it wasn't quite true.

I read every email.

Until next week,
Ritesh