Monday - Chest
Tuesday - Back
Wednesday- Legs
Thusday- Shoulders
Friday - Arms
Saturday - Off
Sunday - Off
Then I rotate the order...
Mon. - delts
Tues. - arms
Wed. - legs
Thur. - back
Fri - chest
Then it rotates again. I bring thursday or fridays routine to monday. Constantly switch up the exercise rotation within the workout. Keep the muscles guessing always having to adapt. I work abs everyday as a warmup and calves once a week with legs (that has now changed to twice a week)