There's a lot of waiting between sets as you get to higher numbers. See the book Starting Strength by Rippetoe, or /r/fitness.
* https://en.wikipedia.org/wiki/Mark_Rippetoe
He's highly opinionated (on a variety of topics), but his system is pretty good. Note: it's fairly boring, as it's the same five basic exercises over and over. But it gets results and having strength is handy.
Other than that, being able to do a 5K is also useful:
* https://fivethirtyeight.com/features/the-5k-not-the-marathon...
Humans really don't need that much activity to stay healthy: at some point it's diminishing returns.
NB Only slightly odd side effect is I now associate particular mountains with specific topics....
Cardio: stationary bike, jumping rope, stair climbing. Body weight: some for abs some for lower back. I learned and picked a few from the youtube channel Athlean X. I personally feel we need those exercises to combat the long hours we sit everyday. And stretching! It was so boring before audiobooks I never stretch, now I stretch before and after.
Feel free to experiment to find your own optimal routine, since we have different schedules and access to equipments. I guess the idea is with audiobooks experimenting can be fun too. Even cleaning the house is fun now with audiobooks :D
He recommends them after ever single workout and from doing this the last couple of months has done wonders from my experience.
His video on it.
The comments on it are pretty funny actually