Spending just 60 seconds a day on a simple activity like sit-to-stands might...

https://delta-wiki.win/index.php/Is_Marching_on_the_Spot_for_60_Seconds_Good_Exercise%3F

Spending just 60 seconds a day on a simple activity like sit-to-stands might help support long-term mobility and muscle strength. It’s an easy way to keep joints moving and build stamina without needing special equipment