The most commom workout splits which people perform are those which split each upper body and lower body workout further so that different muscle groups are worked on different days. This is a great split for those who really want to blast key muscle groups and maximize the rest period which takes place before that same region is worked again. All variations suggested here give you weekends off from training to repair and to enjoy your weekend. Here are three typical upper body/lower body four day splits which employ this principle:

Upper/Lower Four Day Split Variation #1:

Monday – Back, Biceps
Tuesday – Quads, Calves
Wednesday – OFF
Thursday – Chest, Shoulders, Triceps
Friday – Hamstrings, Glutes, Abs
Saturday – OFF
Sunday – OFF

Upper/Lower Four Day Split Variation #2:

Monday – Chest, Back
Tuesday – Quads, Calves
Wednesday – OFF
Thursday – Shoulders, Triceps, Biceps
Friday – Hamstrings, Glutes, Abs
Saturday – OFF
Sunday – OFF

Upper/Lower Four Day Split Variation #3:
NOTE: This variation works the quads and abdominals twice in a week.

Monday – Quads, Hamstrings, Calves, Abs
Tuesday – Chest, Shoulders, Triceps
Wednesday – OFF
Thursday – Back, Biceps
Friday – Quads, Glutes, Abs
Saturday – OFF
Sunday – OFF

I will post sample regimens for the above three variations in the next three posts.