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Half Body - A/B (4X/week)

Hypertrophy Coach

Coach
Joe Bennett

Four days a week is the sweet spot for a lot of lifters. Enough frequency to hit everything twice, few enough sessions to actually recover.

Half Body A/B is upper, lower, upper, lower, and it is the most complete four day program I know how to write.

It runs an A/B rotation: two different upper days and two different lower days, so you never repeat the same session twice in a week. Exercise selection, frequency, volume, rest and proximity to failure are all accounted for.

No junk volume. No random exercises.

Just the most complete four day structure I can build, for lifters who want everything trained twice.

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Everything Trained Twice A Week
Four sessions, upper and lower twice each. That is enough frequency for every body part to get two real exposures, without asking for a fifth or sixth day you do not have.
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Never The Same Session Twice
Upper A, Lower A, Upper B, Lower B. Four distinct workouts across the week, so no movement pattern gets hammered twice and no session turns into one you dread showing up for.
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Every Variable Accounted For
Exercise selection, frequency, volume, rest periods and proximity to failure are all deliberate here. If you want the most current thinking applied properly rather than argued about online, this is it.
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Works From Beginner To Advanced
Unlike the three day full body options, this one scales the whole way up. The structure is right for a first serious training block and still right when you have been lifting for a decade.
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Built In Logbook
Progression is planned, not guessed. Every lift is tracked, and your lifetime lift history is one tap away, so you always know exactly what you have to beat.
Features
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Programming 4 days per week
4 days per week training sessions.
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Exercise Video Guidance
Instructional videos to guide your practice and make execution easy
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Delivered through TrainHeroic
Sweating over a lifeless PDF is so last year. Your coach will push you harder, know you better, and keep you going longer, all through an app.
Equipment
Required
Barbells, dumbbells and a cable stack
Recommended
Commercial gym machines and an adjustable bench
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Sample Week
Week 1 of 12-week program
Sunday
Upper A

A

Incline Smith

2 x 8

B

Wide Grip Pull Ups

2 x 8

C

Rack Military Press

2 x 8

D

Chest Supported Machine Row Upper Back And Lat

2 x 8

E

Cable Rear Delts

10, 10, 12

F

Smith JM Press Banded

8, 8, 12

Monday
Lower A

A

Smith Squats

2 x 8

B

Lying Leg Curls

2 x 8

C

Leg Press

8, 12

D

Rear Foot Elevated Split Squats

10, 10, 15

E

Hip Loaded Calf Raise

8, 10, 10

F

Hanging Leg Raises

3 x 8

Tuesday
Rest
Wednesday
Upper B

A

Incline DB Press

2 x 8

B

Chest Supported Tbar Row

2 x 8

C

Roller Cable Flys

10, 10, 12

D

Single Arm Cable Pull Down

8, 10, 10

E

Lying Cuff Lateral Raises

10, 10, 15

F

Single Arm DB Preacher Curls

8, 10, 10

Thursday
Lower B

A

RDL

2 x 8

B

Seated Leg Curl

2 x 8

C

Hack Squats

2 x 8

D

Barbell Thrusts

10, 10, 15

E

Hip Loaded Calf Raise

8, 10, 10

F

Ab Mat Crunches

3 x 8

Friday
Rest
Saturday
Rest
Coach
coach-avatar Joe Bennett

Olympian Coach | Educator | 20+ years of coaching experience I have coached thousands of lifters and competitors and specialize in building muscle through intelligent programming, not guesswork. Half Body A/B is the most complete four day upper lower program I know how to write.

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What are you waiting for?

Four days is enough to train everything twice and still recover. Most people just never had it laid out properly. Upper, lower, upper, lower, with every variable already decided for you. This is that plan.

Get Half Body - A/B (4X/week)
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FAQs
Who is this program best for?
Advanced through beginner. This is the rare structure that genuinely works at every training age, because four days is enough frequency for a serious lifter and few enough sessions for someone still building the habit.
What is the A/B rotation?
For each day of the split there are two versions. Upper A and Upper B, Lower A and Lower B. You never repeat the same session inside a week, which spreads the work and keeps it interesting.
How is this different from Half Body Single?
Same four days, same upper lower structure. This one gives you four distinct sessions, the Single version repeats two. More variety here, simpler tracking there. Pick whichever you will enjoy more.
Do I need a full gym?
A commercial gym is ideal. At minimum you need barbells, dumbbells and a cable stack. Machines make some of the work better but almost everything has a free weight alternative you can swap in.
Half Body - A/B (4X/week)