Best Workout Routines for Busy People

What would be the best workout routine to follow for busy people in order to train each muscle at least once a week?
The Top Ten
1 Five Day Splits

Training all muscles over the span of five days.

2 4 Day Splits

Training all body parts once a week by working all the muscles over four days.

3 Six Day Splits

Training all muscles over the span of six days with only one day for rest.

4 Full Body Workout

Working out all the muscles in one day with compound movements once a week.

5 Seven Day Workout

Working out all week but with minimal volume and light weights.

6 3 Day Compound Movements Only
7 4 Day Compound Movements Only
8 5 Day Compound Movements Only
9 2 Day Compound Movements Only
10 Strong Lifts Only with 3 Day Splits
The Contenders
11 High Intensity Interval Training (HIIT)
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