I just after some comments on the pros and cons of doing a 4 day a week routine. Take for this example that i do 20 exercises a week, 5 exercises a workout. These would stay the same exercises and set/rep schemes in both instances.

routine 1:

mon - chest+bi

tues - back

thurs - legs

fri - delts+tris

routine 2:

mon - push

tues - pull

thurs - push

fri - pull

so basically i organise the same exercises each week into once a week in routine 1 or twice a week obviously in routine 2. The exact details of the split whether i put this with that etc on routine 1 doesnt matter too much to me at the moment. I'm just wondering what i gain and lose from organising them the 2 different ways, with gaining frequency or losing rest etc. Just after your experienced opinions really. Thanks