Please critique my workout

[jamyjamjr]

it is a sort of 2-day split actually

first one is back, arms

second one is pecs, triceps, shoulders

third one is biceps, back, legs

fourth one is pecs, triceps, shoulders

and what's the benefit of having this split???

the question isn't sarcastic or retorical either...

[cloud_strife]

and what's the benefit of having this split???

the question isn't sarcastic or retorical either...

I noticed that I have much more progress if I train the same bodyparts frequently. And I want to improve my upper body , I am doing only mainteniance work for my legs which are already ok.