Software devs of Reddit. How’s your health?

Tldr: has long sitting hours affected ur health? What do u do stay fit?

A new software dev here. I have worked in a few startups. And that has rewarded me with a weak eyesight, cervical pain and lower backache. My question to fellow redditors is Are you able to keep healthy after years/decades of hard work? What do u do to keep yourself healthy?

Context: working hours in software industry here in India specially in startups are long. Sometimes 10-12 hrs a day. 6-7 days a week.