I played a PC game called "Osmos" (http://osmos-game.com/) like back in 2012 or so. It has all this electronic ambient music as the soundtrack. However, the soundtrack is not created for the game. Rather, the soundtrack is a selection of pre-existing tracks already produced by a few electronic music artists. The link above is one of my favorites. Source: over 1 year ago

You can physically demonstrate orbit with some fabric stretched over a frame, but I really think video games are going to be your best friend here. Osmos (Free demo, $5 full) is a great starting point that uses simplified gravity in two dimensions. Orbit (Free app, $5 on Steam) is another, similar game to introduce orbit. Once you've graduated to three dimensions, Universe Sandbox ($30, $20 on GOG) will really... Source: almost 2 years ago

Nice job, I think below software are good for windows user too. https://hovancik.net/stretchly/. - Source: Hacker News / 7 months ago

A similar piece of software (which I use and can recommend) is Stretchly. Source: about 1 year ago

Stretchly is a free open-source cross-platform app that automatically forces you to take breaks, get a glass of water, stand up, look into the distance, move your head, etc. I use it every day and it’s awesome. Source: over 1 year ago

Break time reminder apps like stretchly or workrave. Source: over 1 year ago

Take breaks every 20-30 mins. You can use any app to remind you of breaks. I personally used Strechly when I was on Windows, it is a great app for this purpose. On Linux, I use Safe Eyes, same concept, just some UI changes, and more features. - Source: dev.to / over 1 year ago