Based on your leverages and insertion points you can have a big, jacked upper body from one movement alone.
A basic calisthenic at that :
•Pushup
•Dip
•Pullup
•Chin Up
•Neutral Grip Pullup
First you have to look at your leverages.
The easiest way is…are your arms long or short?
T-Rex arms will be served by the pushup.
Monkey arms the pullup.
Of course you’ll have to experiment with them all to find the one best for you.
One movement will shine above the rest.
For me there is no such thing as too many pushups. I can do them all day without issue.
My buddy is similar, but for him it’s pullups.
For you? Maybe it’s dips, chins, or neutral grip.
I’m confident in saying you can do this. Without much digging you’ll find scientifically scientific anecdotes of this principle having worked.
A movement on the list will be sustainable insanity for you, with no downsides.
Calisthenics are a thing of beauty, there won’t be imbalance. The antagonists will fire as well alongside the working muscles each and every rep.
I don’t have to balance my pushups. It’s an “I’m jacked” stimuli I repeat daily.
And coolly enough you can have the same for the lower body. I suggest walking swamp lunges, though again find your movement.
This isn’t to say only do the one move, that’s absurd. I’m here to stress to you that you can be set with the one if/when necessary.
With pushups I’m golden.
-J
To take this to a more esoteric level ; flexing, the answer is flexing.