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This is the battery “theory,” and is obviously untrue from all evidence collected. Exercise and specifically improvement of VO2max, which is the bodies ability

This is the battery “theory,” and is obviously untrue from all evidence collected. Exercise and specifically improvement of VO2max, which is the bodies ability to pump and process a volume of blood and oxygen in a period of time, are some of the strongest predictors of life and health span. A lack of exercise also transpires to significantly increase global inflammation in the body - in fact regular exercise forces the body to adapt to a new homeostatic use of calories away from random inflammation to conserve daily caloric expenditure towards that exercise. There’s no evidence to support the battery “theory,” despite certain anti science politicians popularizing it.

alexey-salmin 2y ago
> This is the battery “theory,” and is obviously untrue from all evidence collected. Exercise and specifically improvement of VO2max, which is the bodies ability to pump and process a volume of blood and oxygen in a period of time, are some of the strongest predictors of life and health span. Exercise and specifically improvement of VO2max also decrease your average heart rate, so it's quite aligned with the battery theory.
TrainedMonkey 2y ago
OG study that found a roughly same number of heartbeats was only concerned with averages - https://pubmed.ncbi.nlm.nih.gov/9316546/ https://pubmed.ncbi.nlm.nih.gov/9316546/ . Interestingly humans are outliers with 2-3x the expected number of heartbeats. The way the data was presented always gave me a strong "everything looks linear when plotted on a log scale with big marker" vibe... however it could be totally possible that there is some correlation there. Maybe evolutionary, there is optimal amount of time for organisms to survive relative to their size. Organism size, in turn, correlates with heart size and heart size correlates with how fast it beats. Probably totally missing the mark, but if it was true, it would be interesting to look into why there are outliers. Anywho, I find it humorous to think about a battery theory car analogy - "every car has a preset number of miles and maintenance would decrease usable lifespan of the car because you need to drive to the mechanic".

alexey-salmin 2y ago

> This is the battery “theory,” and is obviously untrue from all evidence collected. Exercise and specifically improvement of VO2max, which is the bodies ability to pump and process a volume of blood and oxygen in a period of time, are some of the strongest predictors of life and health span. Exercise and specifically improvement of VO2max also decrease your average heart rate, so it's quite aligned with the battery theory.

TrainedMonkey 2y ago

OG study that found a roughly same number of heartbeats was only concerned with averages - https://pubmed.ncbi.nlm.nih.gov/9316546/ https://pubmed.ncbi.nlm.nih.gov/9316546/ . Interestingly humans are outliers with 2-3x the expected number of heartbeats. The way the data was presented always gave me a strong "everything looks linear when plotted on a log scale with big marker" vibe... however it could be totally possible that there is some correlation there. Maybe evolutionary, there is optimal amount of time for organisms to survive relative to their size. Organism size, in turn, correlates with heart size and heart size correlates with how fast it beats. Probably totally missing the mark, but if it was true, it would be interesting to look into why there are outliers. Anywho, I find it humorous to think about a battery theory car analogy - "every car has a preset number of miles and maintenance would decrease usable lifespan of the car because you need to drive to the mechanic".