making the most of break time

I like to take short breaks every 50 minutes (give or take, depending on the class/task) for the sole purpose of letting my brain take a breather so I can come back with a clearer, more focused headspace. Otherwise, you know how it goes- burn out. But, usually out of sheer habit and without thought-- I often spend these breaks scrolling, something that definitely doesn't let the brain reset. So.... I need some advice on things that you guys do during breaks that help come back to your work afterwards with a clearer mind. Things that don't involve scrolling on social media. Also, im looking for things beyond the typical advice such as "go outside"- since thats already something that i know works