There's already this one:
https://www.amazon.co.uk/Healthy-Programmer-Better-Pragmatic...
But to be honest I'm not sure what 'geeks' think is so intrinsically different about themselves that they need to treat this subject differently to anyone else.
I think fitness is one of those subjects where you want to be very cautious about anything that describes itself as a shortcut or a clever way of doing it. You just need to do the work.
If anyone can link the recent HN discussion about eye exercise building some device to slowly move books away while reading I can't find it.
There is one focused on something like this, called Fitness for geeks. https://www.amazon.com/dp/B007UQN22A/ref=dp-kindle-redirect?...
Kind of a long-form marketing style but free.