i agree with cradler, a 45min-1 hour session just for shoulders is waaay overkill and then to train back the next day? yikes!

if you're dead set on a bodypart split, you'd do better with a 3 way like chest,bis,tris/legs/back,shoulders or chest,shoulders tris/legs/back,biceps - shit like that. if you still trained 4 days a week you'd end up hitting a diff one of those sessions twice a week.

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