Fitness
How to Measure Your Level of Everyday Fitness
Essential health and fitness standards depend on what you need to be capable of doing on a daily basis, but are you prepared for life’s emergencies? This question touches on that subject:
Stew, if you were a normal person just trying to be an asset in your everyday life (just living and emergencies), what fitness standards would you recommend? David
My answer stems from one of my definitions of tactical fitness:
Tactical fitness requires a person to be “good at everything” and not particularly great at any one thing. This means a person of any age should be able to engage in activities requiring strength, power, speed, agility, endurance, muscle stamina, flexibility, mobility and grip strength.
These abilities make you an asset (versus a liability) in practically any situation, meaning you can be helpful to others and save yourself in potentially dangerous situations, whether they are natural or man-made. You have a level of durability and a work capacity that allows you to do what needs to be done daily (chores, yard work, work/hobbies and life). You do not need to be world class in anything, but maintaining these elements of fitness will prolong your ability to stay an asset in your life.
The standards will vary with age and sex, and there is a wide range of capabilities below, but older men and women are still staying fit at above-average levels. Some people I know with higher-range scores on these activities are in their 80s! However, I would define remaining an asset as “above average” compared to society today.
Defining ‘Being an Asset’
Walk/Run (Endurance)
The endurance needed to walk an hour with no problem is a good minimum standard. Can you add weight to that walk? A backpack? A weight vest? If you can mix any jogging into that hour, that would be better. Can you run a mile without stopping? Can you run it faster than 8-10 minutes? As you progress through this range of abilities, the longer and faster (and more weight) you can move, the more of an asset you are. If you want a standard, walk with 25% of your body weight for one hour and run a mile without stopping. The younger you are, you can place a time and distance limit of 4 mph with walking and 7-8 minutes per mile running.
Muscle Stamina/Strength
Depending on your abilities, calisthenics may be considered a strength activity (one push-up, one pull-up, one dip). While your first repetition of calisthenics is a strength exercise, your 10th or 20th repetition involves muscle stamina. As an asset, you can do standard calisthenics for reps. However, if you can do one repetition, you have a level of strength that many lack. Where are you on this spectrum? Are calisthenics a strength or muscle stamina exercise? If it’s the latter, I would consider you an asset with your muscle stamina.
Strength/Load Bearing
As discussed above, strength and durability are required to carry a backpack and perform heavier calisthenics. However, are you strong? Can you lift heavy things? You can cultivate this ability in the gym or in the yard with wheelbarrows, bags of mulch, shovels of dirt or hay bales. Carrying groceries from the car to the house and walking the stairs without pause are lower-level capabilities, but many cannot.
How much weight can you lift off the floor, squat and chest-press? The greater percentage over your body weight places you in the asset category for strength. Can you carry someone out of a dangerous situation? This is the ultimate asset category. A firm grip is part of the strength function and can be tested by hanging on a pull-up bar or doing farmer’s walks with weight. Can you carry half of your body weight? One hundred percent of it during the farmer’s walk (two dumbbells)?
Flexibility/Mobility
Flexibility and mobility help you move quickly and without pain and stiffness. Can you bend over, touch your toes, get into the down dog pose, do a push-up and reverse the order to stand again? Or if you are in a chair or on the floor, are you stuck and struggle to stand without assistance? These are the basics of flexibility and mobility, but doing 10-20 different yoga poses or an hourlong yoga class places you on a higher level on the asset spectrum.
Speed and Agility
As we age, these qualities tend to be the first to go, even if you practice doing these activities. Playing a sport such as soccer, tennis or pickleball can help you maintain and improve speed and agility. Excessive speed can be practiced by jumping, running and stopping fast. Can you do an obstacle course? Can you do a shuttle run quickly? Maintaining these skills throughout life places you high on the asset spectrum, as not many people can move fast.
While these are loosely defined parameters of “an asset,” they demonstrate to most how little they are doing. By adding this variety of training to your week, you can have a moderately developed set of fitness skills that indeed make you an asset in typical situations.
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Fitness
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Fitness
Exercise Boosts Brain ‘Ripples’ Tied to Learning and Memory
While exercise is known to improve memory, scientists have mostly studied this effect by using behavioral tests or brain imaging methods like MRIs, says Michelle Voss, PhD, one of the study’s authors, a professor, and the director of the Health, Brain, and Cognitive Lab at the University of Iowa in Iowa City.
But she says these approaches can’t precisely identify where “ripples” originate, particularly in the deep brain structures like the hippocampus, a part of the brain strongly connected to memory and learning, she says.
The current study, published in Brain Communications, recorded electrical activity directly, using surgically implanted (intracranial) electrodes. “This allowed us to observe how exercise changes the brain’s memory circuits in real time,” Dr. Voss says.
20-Minute Bursts of Exercise Increase Brain Ripples
The participants performed a 5-minute warm-up and then rode a stationary bike for 20 minutes at a pace they could maintain. Researchers recorded their brain activity before and after the biking session.
The electrodes showed an increased rate of so-called sharp-wave ripples from the hippocampus and connections with cortical regions of the brain, which are involved in learning and memory.
“Sharp-wave ripples have long been known from animal studies to play a central role in memory,” Voss says, adding that recent studies using intracranial recordings in humans also support the importance of ripples for human memory.
“Our findings are the first to show that exercise can modulate these ripple signals in the human brain,” she says.
Researchers also observed that larger increases in heart rate during exercise were associated with larger changes in ripple activity in cortical networks, Voss adds.
What’s Already Known About Exercise, Memory, and Learning
Exercise helps build connections between neurons, which deepens and strengthens brain networks, Franssen says.
Physical activity also improves metabolism, which improves insulin sensitivity, helping blood sugar regulation and giving the brain a “more stable and reliable supply of fuel,” Dr. Perlmutter says.
“This is critically important because the brain is an energy-intensive organ, consuming roughly 20 percent of the body’s energy despite representing only a small fraction of body weight,” he adds.
The Research Has Limitations
Voss says researchers were careful to “exclude signals that contained epileptic activity. However, of course, we can’t statistically control for the accumulated effects of having epilepsy on the brain.”
The exercise-brain ripple patterns observed in the current study also closely match those observed in healthy adults using noninvasive brain imaging, such as MRI, she added.
“That convergence across very different methods is one of the strongest indicators that the effects are not specific to epilepsy, but reflect a more general human brain response to exercise,” Voss said.
Researchers also didn’t directly test memory performance, Voss notes. “While hippocampal ripples are strongly linked to memory processing in decades of neuroscience research, the next step will be to measure how exercise-related changes in ripples relate to memory performance in the same individuals.”
Future studies should also compare exercise with other everyday activities, such as sitting quietly or light movement, to determine how specific these effects are to aerobic exercise at the intensity that was studied, she says.
Satisfy Your Brain’s Exercise Craving
It’s never too early or too late to start exercising for brain health, Franssen says.
People of any age, from grade-school children to people in their nineties, can benefit from increased physical activity, Perlmutter says. “My recommendation is to consider taking advantage of the connection between physical activity and brain health across the entire range of human aging.”
Any type of exercise is great, Franssen says, but especially “repetitive behaviors,” like swimming, jogging, and walking.
“Sometimes we let the hugeness of putting in a huge fitness routine get in our way,” she says. “Having a little exercise snack every so often is also very important to improving cognition.”
Fitness
Higher Fitness Levels Amplify Brain Benefits After Exercise, Study Finds
Increasing our level of physical fitness leads to a bigger release of brain-boosting proteins following one session of exercise, a new study led by a UCL researcher has found.
The study, published in Brain Research, took a group of inactive unfit participants through a 12-week training programme of cycling three times per week and made them fitter. Researchers found as their fitness increased, so did the amount of brain-derived neurotrophic factor (BDNF) released following exercise, resulting in improved brain function.
Just 15 minutes of moderate to vigorous aerobic exercise releases BDNF, a brain protein which is known to support the formation of new neurons and new synapses (connections between brain cells), and maintains the health of existing neurons. This is the first study to show that for unfit people, just 12 weeks of consistent training can boost the brain’s response to a single 15-minute workout.
The study, led by Dr Flaminia Ronca (UCL Surgery & Interventional Science, and the Institute of Sport, Exercise and Health), involved 30 participants – 23 male and seven female – taking part in the 12-week programme. To assess fitness levels throughout the programme, participants completed VO2max tests every six weeks, which measures the maximum rate of oxygen your body can consume and use during intense exercise.
BDNF levels were measured pre- and post-VO2max testing, alongside a series of cognitive and memory tests, while also measuring changes in brain activity in the prefrontal cortex – where executive functions such as decision-making, emotion regulation, attention and impulsivity are controlled.
By the final week of the trial, results showed that baseline levels of BDNF did not change, but participants did show a larger spike of BDNF following intense exercise, compared to how their brains responded to intense exercise before the 12-week programme. This was linked to improvements in VO2max (aerobic fitness).
Higher overall BDNF levels and stronger exercise-induced increases were also associated with changes in activity across key areas of the prefrontal cortex during attention and inhibition tasks, though not during memory tasks.
Overall, the results showed that increasing physical fitness can enhance the brain’s ability to produce BDNF in response to acute bouts of exercise, which can have a strong positive influence on neural activity.
Lead author Dr Flaminia Ronca said: “We’ve known for a while that exercise is good for our brain, but the mechanisms through which this occurs are still being disentangled. The most exciting finding from our study is that if we become fitter, our brains benefit even more from a single session of exercise, and this can change in only six weeks.”
Notes to editors:
For more information or to speak to the researchers involved, please contact: Tom Cramp, UCL Media Relations , T: +447586 711698, E: [email protected]
The research paper: ‘BDNF relates to prefrontal cortex activity in the context of physical exercise’, Flaminia Ronca, Cian Xu, Ellen Kong, Dennis Chan, Antonia Hamilton, Giampietro Schiavo, Ilias Tachtsidis, Paola Pinti, Benjamin Tari, Tom Gurney, Paul W. Burgess, is published in Brain Research, March 2026,
About UCL (University College London)
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Since 1826, we have championed independent thought by attracting and nurturing the world’s best minds. Our community of more than 50,000 students from 150 countries and over 16,000 staff pursues academic excellence, breaks boundaries and makes a positive impact on real world problems.
We are consistently ranked among the top 10 universities in the world and are one of only a handful of institutions rated as having the strongest academic reputation and the broadest research impact.
We have a progressive and integrated approach to our teaching and research – championing innovation, creativity and cross-disciplinary working. We teach our students how to think, not what to think, and see them as partners, collaborators and contributors.
For 200 years, we are proud to have opened higher education to students from a wide range of backgrounds and to change the way we create and share knowledge.
We were the first in England to welcome women to university education and that courageous attitude and disruptive spirit is still alive today. We are UCL.
www.ucl.ac.uk | Read news at www.ucl.ac.uk/news/ | Follow UCL News on Bluesky and LinkedIn
Journal
Brain Research
DOI
10.1016/j.brainres.2026.150253
Method of Research
Experimental study
Subject of Research
People
Article Title
BDNF relates to prefrontal cortex activity in the context of physical exercise
Article Publication Date
4-Mar-2026
Media Contact
Tom Cramp
University College London
[email protected]
Journal
Brain Research
DOI
10.1016/j.brainres.2026.150253
Journal
Brain Research
DOI
10.1016/j.brainres.2026.150253
Method of Research
Experimental study
Subject of Research
People
Article Title
BDNF relates to prefrontal cortex activity in the context of physical exercise
Article Publication Date
4-Mar-2026
Tags
/Health and medicine/Human health/Physical exercise
bu içeriği en az 2000 kelime olacak şekilde ve alt başlıklar ve madde içermiyecek şekilde ünlü bir science magazine için İngilizce olarak yeniden yaz. Teknik açıklamalar içersin ve viral olacak şekilde İngilizce yaz. Haber dışında başka bir şey içermesin. Haber içerisinde en az 12 paragraf ve her bir paragrafta da en az 50 kelime olsun. Cevapta sadece haber olsun. Ayrıca haberi yazdıktan sonra içerikten yararlanarak aşağıdaki başlıkların bilgisi var ise haberin altında doldur. Eğer yoksa bilgisi ilgili kısmı yazma.:
Subject of Research:
Article Title:
News Publication Date:
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Keywords
Tags: 12-week cycling training program benefitsbrain plasticity and physical fitnessbrain-derived neurotrophic factor after exerciseeffects of aerobic exercise on BDNFexercise and neuron healthexercise-induced neurogenesisfitness level impact on brain proteinsfitness training for cognitive improvementimproving brain function through fitnessmoderate to vigorous aerobic exercise effectsphysical fitness and brain healthVO2max and brain function correlation
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