Stretching for long or short peroids?

Is it better to stretch for a constant 5 minutes or would it be better to do say 10 sets of 30 second stretches?

Thanks…

I would say that longer constant stretching would be more for hangers.

Manual stretching is done for shorter periods mainly due to the fact that it’s difficult to maintain a good stretch for extended duratiota - unless you have triceps the size of small mountains :D