Rest 1 minute between sets = subsequent set is 30% as effective as it could be
Rest 1.5 minutes between sets = subsequent set is 60% as effective as it could be
Rest 2 minutes between sets = subsequent set is 80% as effective as it could be
Rest 3 minutes between sets = subsequent set is 90% as effective as it could be
Rest 4 minutes between sets = subsequent set is 95% as effective as it could be
Rest 5+ minutes between sets = subsequent set is 95+% as effective as it could be
This is based on what I’ve seen with clients/experienced myself over the last 15 years
Focus less on the specifics and more on the concept
More rest = more effectiveness on subsequent sets but there are diminishing returns
If you’re not pressed for time, you don’t mind spending it at the gym, and you want the best gains possible…obviously the longer rests are preferred
If pressed for time, you may have to opt for shorter rests and accept that the effectiveness of each set will be reduced!
Not trolling even a little bit:
I would choose this exercise over Standing Face Pulls every day….AND TWICE ON SUNDAY
Legit LIGHT YEARS BETTER than the unstable mess that is Standing Face Pulls
Bonus:
You can perform these in basically any gym in the world!!!