This reminds me a lot of the 5BX (5 Basic Exercises) plan. https://en.wikipedia.org/wiki/5BX https://en.wikipedia.org/wiki/5BX That has 5 exercises which you

This reminds me a lot of the 5BX (5 Basic Exercises) plan. https://en.wikipedia.org/wiki/5BX https://en.wikipedia.org/wiki/5BX That has 5 exercises which you should be able to do in 5 minutes. It has a complete scheme of exercises building up in intensity as you get better at them.