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> The Stringbike is a bicycle that uses a rope and pulley drive system instead of a traditional bicycle chain and sprockets.[1][2][3][4] It uses two Dyneema ropes attached to pulleys attached to swinging lever and cam mechanisms, one on each side of the bike. These mechanisms replace the round sprockets found on chain-driven bikes. Unlike some traditional 10-speed gears using a derailleur, there is no slippage when changing gear ratios.[5] The Stringbike uses a 19 gear ratio system with no duplicates and a total gear range of 3.5 to 1. The transmission ratio can be changed with a shifting knob located on the right-side handle grip. Gear ratios can be changed even when the bicycle is almost stationary.[6]
 
> Hungarian designers from the manufacturing company Schwinn Csepel Zrt, unveiled the bicycle in 2010 in Padova, Italy.[7]
 
It never caught on so possibly isn't better than a chain design, but maybe it simply lacks popularity or the idea might be made use of for some other application

https://www.raspberrypi.com/news/introducing-raspberry-pi-5/
 
https://www.raspberrypi.com/products/raspberry-pi-5/
 
Comparing to past version: https://picockpit.com/raspberry-pi/raspberry-pi-4-vs-raspberry-pi-5/

https://www.healthline.com/health/holding-your-breath#training
 
> Holding your breath, as well as generally improving breathing and lung function, has useful, potentially lifesaving benefits, including:
 
> increasing life span by preserving the health of stem cells
 
> possible regeneration of new tissue in the brain to preserve brain function (this is theoretical in humans, though; studies have only been done on salamanders)
 
> increasing resistance to bacterial infections
 
> learning how to make yourself feel relaxed

im trying to structure a comment and its not recognising the commands

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