Between exercises I’ll go to the pullup bar, do a set or two, then go back to a different exercise.
Another thing I do is alternate push and pull exercises.
The lat pulldown is very euphoric after pushups/burpees. A nice stretch for the shoulder girdle.
Dips serve the same purpose after upper body pulling exercises.
Tight pull muscles are loose again after dips.
It’s stretching via the relationship between agonist and antagonist muscles.
It helps you recover quicker, both in the session, and throughout the course of the week.
I curl before weighted pushups as the bicep pump makes the groove feel stronger.
“Hand offs” laddering up to 15 or so with a 40-50lb ez curl bar, then weighted pushups.
A good wall handstand, held for about as long as you can, is about the best one stop shop upper body exercise in existence for a quick pump.
I’ve heard some interesting theories on blood flow and hypertrophy.
The handstand pump makes sense taking those in. All your blood flow is going to the upper body when you’re inverted against the wall.