Your Body Check
Updated 2026-09-30
Body Check, by the numbers
the risk of death from any cause for adults aged 51 to 80 who scored 0 to 3 on the sitting-rising test, compared with those who scored 8 to 10, over a median 6.3 years [1].
What a poor result is linked to
Higher risk of death from any cause, worst result vs best, observational studies
Brito et al. [1] · Araujo et al. [2] · Zhang et al. [3] · Jayedi et al. [4] · Hagger-Johnson et al. [5]
The short version
- •Scoring 0 to 3 out of 10 on the sitting-rising test was linked to 5.44 times the risk of death of scoring 8 to 10, in 2,002 adults aged 51 to 80 [1].
- •Not being able to stand on one leg for 10 seconds was linked to 84% higher mortality over a median 7 years [2].
- •A resting pulse above 80 was linked to 45% higher mortality than the lowest heart rates, across 46 studies and 1.2 million people [3].
- •Each standard deviation slower on a computer reaction-time test was linked to 15% higher mortality, fully adjusted [5]. The ruler drop is only a stand-in for that test, so it carries a star.
- •A waist under half your height is the healthy range in UK guidance [6], and each 0.1 higher ratio was linked to 24% higher mortality before adjusting for BMI (42% in the 2 studies that did) [4].
- •Every one of these is a link seen in people followed over time, not proof that the test itself matters. The Body Check is its own score out of 5 and adds no years to your lifespan estimate.
Most of what predicts how long you live is hidden: blood pressure, blood sugar, the state of your arteries. A few things are not. How easily you get off the floor, how steady you stand, how fast your heart beats at rest, how quickly you react and how much of your weight sits around your middle can all be checked at home with a wall, a timer, a ruler and a piece of string. Each has been followed in real people over years and linked to survival. Below is why each test matters, how strong the evidence is, and exactly what a result can and cannot tell you.
Sitting-rising test: getting down to the floor and back up
In a Brazilian clinic sample of 2,002 adults aged 51 to 80, researchers scored how well people sat down on the floor and stood back up: 5 points for each half, minus 1 for every hand or knee used for support. Over a median 6.3 years, 159 died. Compared with a score of 8 to 10, scores of 0 to 3 were linked to 5.44 times the risk of death (95% CI 3.1 to 9.5), 3.5 to 5.5 to 3.44 times and 6 to 7.5 to 1.84 times, after accounting for age, sex and BMI; each extra point was linked to 21% better survival [1]. The move needs leg strength, flexibility, balance and coordination all at once, which is why it tracks so closely with overall physical capability. Evidence: Low (one cohort, adjusted for age, sex and BMI only). The study set no pass mark; the Body Check uses 8, the edge of the lowest-risk group.
Do this
Try it on a soft floor with a chair within reach. If you use a hand or knee, practise the pieces: squats to a low chair, hip and ankle mobility, and balance work.
10-second one-leg stand: static balance
In 1,702 adults aged 51 to 75, about 1 in 5 could not stand on one leg for 10 seconds, with the other foot resting on the back of the standing leg and arms by their sides. Over a median 7 years, 17.5% of those who failed died against 4.6% of those who passed. After accounting for age, sex, BMI and existing illness, failing was linked to 84% higher risk of death from any cause (hazard ratio 1.84, 95% CI 1.23 to 2.78) [2]. Balance draws on the inner ear, vision, sensation in the feet and leg strength, so losing it can be an early sign that several systems are slipping. Evidence: Low (one cohort).
Do this
Do it next to a wall. If you cannot hold 10 seconds, practise daily: stand on one leg while brushing your teeth, holding the counter at first.
Resting pulse: how hard your heart works at rest
A meta-analysis of 46 studies with 1,246,203 people found that each 10 extra beats a minute at rest was linked to 9% higher mortality from any cause. Compared with the lowest heart-rate group in each study, a resting rate above 80 was linked to 45% higher risk (relative risk 1.45, 95% CI 1.34 to 1.57) [3]. The studies varied a lot and the authors found signs of publication bias, which shrinks the per-10-beat figure when corrected. A lower resting pulse partly reflects heart fitness, so it moves with regular cardio. Evidence: High (meta-analysis of prospective cohorts).
Do this
Count for 15 seconds after 5 quiet minutes sitting down, and multiply by 4, or read your resting heart rate off a watch or tracker. Above 80, more aerobic exercise is the usual lever; a pulse that is irregular, very fast or very slow is worth showing a doctor.
Ruler-drop reaction: a rough read on processing speed
In 5,134 US adults aged 20 to 59 followed for about 15 years, each standard deviation slower on a computer reaction-time test was linked to 15% higher mortality from any cause, fully adjusted for age, sex, ethnicity, education, income, health habits and heart risk factors (hazard ratio 1.15, 95% CI 1.02 to 1.29). Adjusted only for age, sex and ethnicity, the figure was 25%. How much reaction time varied from try to try mattered more than the average speed [5]. *The ruler drop is not what that study measured. A dropped ruler falls a distance of ½ × g × t², so a catch within 20 cm means about 0.20 seconds; that 20 cm pass line is a physics benchmark, not a clinical cutoff. Evidence: Low for the computer test, Very low for the ruler as a stand-in.
Do this
Take the middle of three catches. Sleep, alcohol and tiredness all slow reactions, so test on an ordinary day.
Waist-to-height string test: the fat BMI misses
UK guidance (NICE) calls a waist-to-height ratio of 0.4 to 0.49 healthy and advises keeping your waist under half your height [6]. In a meta-analysis of cohort studies, 11 studies with 760,190 people and 23,959 deaths gave a 24% higher risk of death from any cause for each 0.1 higher ratio (hazard ratio 1.24, 95% CI 1.12 to 1.36). That pooled figure is not adjusted for BMI; in the 2 studies that did adjust for BMI it was 42% [4]. An earlier meta-analysis found the ratio better than BMI at spotting people who already have high blood pressure, diabetes or other heart and metabolic risk factors [7]. Evidence: Moderate for the mortality link (very mixed studies), Very low for the BMI comparison (it looked at existing risk factors, not deaths).
Do this
A string as long as your height, folded in half, should reach around your waist. If it does not, the usual levers are the ones that shrink belly fat: more movement, less alcohol and fewer ultra-processed foods.
What these tests cannot tell you
Every study above followed people over time and found a link; none tested whether improving your score changes how long you live. Some people fail a test because an illness they already have is slowing them down, which the studies could only partly adjust for. That is why the Body Check is its own score out of 5 and adds no years to your lifespan estimate: a test result mostly shows what your habits already did, and counting both would count the same thing twice.
Do this
Treat a result worth working on as a nudge, not a verdict. Self-check, not a diagnosis: a sudden change, pain or dizziness during any test is a reason to see a doctor.
How to tell if yours is good
Signals you can read yourself, starting today, and what a good reading looks like.
Sitting-rising test
8 to 10 out of 10, the study’s lowest-risk group (it set no pass mark)
One-leg stand
Hold 10 seconds, on either leg, within three tries
Resting pulse
80 beats a minute or fewer after 5 minutes sitting
Ruler drop
Catch it within 20 cm (about 0.2 seconds)
Waist string
Half your height reaches around your waist
Now score your own
The Life Quiz turns habits like these into your numbers, and the years they are worth.
Go deeper in the Wiki
Sources
- [1]L. B. Brito et al. Ability to sit and rise from the floor as a predictor of all-cause mortality. Eur J Prev Cardiol, 21(7):892-8, 2014. doi:10.1177/2047487312471759 Evidence: Low
- [2]C. G. Araujo et al. Successful 10-second one-legged stance performance predicts survival in middle-aged and older individuals. Br J Sports Med, 56(17):975-980, 2022. doi:10.1136/bjsports-2021-105360 Evidence: Low
- [3]D. Zhang, X. Shen, and X. Qi. Resting heart rate and all-cause and cardiovascular mortality in the general population: a meta-analysis. CMAJ, 188(3):E53-E63, 2016. doi:10.1503/cmaj.150535 Evidence: High
- [4]A. Jayedi et al. Central fatness and risk of all cause mortality: systematic review and dose-response meta-analysis of 72 prospective cohort studies. BMJ, 370:m3324, 2020. doi:10.1136/bmj.m3324 Evidence: Moderate
- [5]G. Hagger-Johnson et al. Reaction time and mortality from the major causes of death: the NHANES-III study. PLoS One, 9(1):e82959, 2014. doi:10.1371/journal.pone.0082959 Evidence: Low
- [6]National Institute for Health and Care Excellence. Overweight and obesity management: identifying and assessing overweight, obesity and central adiposity. National Institute for Health and Care Excellence (NICE guideline NG246), 2025. Evidence: Not graded (guideline)
- [7]M. Ashwell, P. Gunn, and S. Gibson. Waist-to-height ratio is a better screening tool than waist circumference and BMI for adult cardiometabolic risk factors: systematic review and meta-analysis. Obes Rev, 13(3):275-286, 2012. doi:10.1111/j.1467-789X.2011.00952.x Evidence: Very low
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YapSpan estimates are for reflection and entertainment only. They are not medical advice, a diagnosis, or a prediction of any individual outcome. Check with a doctor before making any medical decision.