Building a strong and aesthetic physique is the ultimate goal of many fitness enthusiasts. However, it requires discipline, proper nutrition, and a well-designed workout program.
A good workout program allows you to train in an organized way and help you achieve your best shape.
In this article, I’ll share a comprehensive 12-week body transformation workout plan for those who want to build muscles and transform their physique from lean to muscular.
This workout program will be challenging and require great effort, but it will ultimately help you achieve your best physique over time.
Program Description
This program involves popular training splits, such as push-pull-legs, upper-lower, full-body, and muscle-group splits, allowing you to train your muscles effectively while keeping you interested in lifting weights.
Here’s how you going to train throughout the 12 weeks:
The upper/lower split and PPL involve training the upper and the lower muscle groups in separate sessions. They allow you to focus on upper and lower body parts more effectively and will help you build strength and mass.
The hybrid split involves combining upper and lower body parts and often includes supersets and tri-sets to target the muscles in a time-efficient manner.
And the Bro-split or single-muscle group split involves focusing on one body part a day. It is easy to follow and allows you to work on improving symmetry and muscle definition.
The combination of multiple training splits in this transformation gym workout program will keep you engaged and help you develop strength and hypertrophy over time.
The Ultimate 12 Week Body Transformation Workout Plan to Get From Lean to Muscular
Before you start, keep the following things in mind:
Increase the loads when you decrease the repetitions.
Do each rep in a controlled manner by engaging your working muscles efficiently.
Whether you lift light or heavy, make sure you feel the full contraction and try to reach failure in each set.
Keep increasing load over time to stimulate strength and mass growth.
The plus (+) sign indicates superset. Know more about Superset.
When the number of sets and reps is overwhelming, lower it according to your needs.
Week 1 – Full Body Workout
You’ll train four times during this week – three days of weight training and one day of cardio.
The third week is based on the upper-lower split and involves lifting weights five times weekly with three sessions for the torso and two for the legs.
The upper body day involves training two to three muscle groups a day while you train your entire legs on each lower body day.
Weekly schedule for 3rd and 4th week:
Monday: Upper Body
Tuesday: Lower Body
Wednesday: Upper Body
Thursday: Active Recovery Day
Friday: Lower Body
Saturday: Upper Body
Sunday: OFF
You can do the cardio of your choice on active recovery days to enhance your cardiovascular fitness.
The fifth and sixth week involves splitting training sessions into push, pull, and leg workouts.
With this split, you can hammer each muscle group twice per week, one time with a moderate rep range and the other time with a lower rep range (heavyweight sets).
Weekly Schedule for the 5th & 6th week:
Monday: Push Workout A
Tuesday: Pull Workout A
Wednesday: Legs Workout A
Thursday: Push Workout B
Friday: Pull Workout B
Saturday: Leg Workout B
Sunday: Rest
Monday – Push Workout A
Workout
Target Muscles
Sets
Reps
Incline Bench Press
Chest
3
12-15
Seated Chest Press
Chest
3
12-15
Seated Pec Fly
Chest
3
12-15
Parallel Bar Dips
Pecs & Tris
3
10-20
Lateral Raises
Shoulder
3
12-15
Skull Crusher
Triceps
3
12-15
Pushdown
Triceps
3
12-15
Tuesday – Pull Workout A
Workout
Target Muscles
Sets
Reps
Pull-ups
Back
3
Failure
Pulldown (Overhand Grip)
Back
3
12-15
Machine Row (Close Grip)
Back
3
12-15
Straight-arm Lat Pullover
Back
3
12-15
Reverse Fly / Face Pull
Upper Back
3
12-15
Preacher Curl
Biceps
3
12-15
Cable Crunches
Abdominals
3
15-20
Wednesday – Leg Workout A
Workout
Target Muscles
Sets
Reps
Lunges
Legs
2
8/leg
Leg Extension
Quads
4
15-20
Hack Squat
Quads
4
12-15
Leg Curl
Hamstrings
4
15-20
Cable Pull Through
Glutes
4
10-12
Calf Raises
Calves
4
15-20
Thursday – Push Workout B
Workout
Target Muscles
Sets
Reps
Flat Bench Press
Chest
3-4
6-8
Incline DB Bench Press
Chest
3-4
6-8
Bent-over Cable Fly
Chest
3-4
8-10
Military Press
Shoulder
3-4
6-8
Overhead Extension
Triceps
3-4
8-10
Friday – Pull Workout B
Workout
Target Muscles
Sets
Reps
Conventional Deadlifts
Back
4
5-6
Single-arm DB Row
Back
3
6/arm
Lat Pulldown (Close Grip)
Back
3
8-10
T-Row (Pronated Grip)
Back
3
8-10
Barbell Curl
Biceps
3
8-10
Cable Bicycle Crunches
Abdominals
3
10/arm
Saturday – Leg Workout B
Workout
Target Muscles
Sets
Reps
Back Squat
Legs
4
6-8
Leg Press
Quads
4
6-8
Reverse Lunges
Quads
4
6/arm
Hip Thrust
Hamstrings
4
8-10
Week 6 – Push, Pull, Legs (PPL)
Monday – Push Workout A
Workout
Target Muscles
Sets
Reps
Incline Bench Press
Chest
3
12-15
Seated Chest Press
Chest
3
12-15
Seated Pec Fly
Chest
3
12-15
Parallel Bar Dips
Pecs & Tris
3
10-20
Lateral Raises
Shoulder
3
12-15
Skull Crusher
Triceps
3
12-15
Pushdown
Triceps
3
12-15
Tuesday – Pull Workout A
Workout
Target Muscles
Sets
Reps
Pull-ups
Back
3
Failure
Pulldown (Overhand Grip)
Back
3
12-15
Machine Row (Close Grip)
Back
3
12-15
Straight-arm Lat Pullover
Back
3
12-15
Reverse Fly / Face Pull
Upper Back
3
12-15
Preacher Curl
Biceps
3
12-15
Cable Crunches
Abdominals
3
15-20
Wednesday – Leg Workout A
Workout
Target Muscles
Sets
Reps
Lunges
Legs
2
8/leg
Leg Extension
Quads
4
15-20
Hack Squat
Quads
4
12-15
Leg Curl
Hamstrings
4
15-20
Cable Pull Through
Glutes
4
10-12
Calf Raises
Calves
4
15-20
Thursday – Push Workout B
Workout
Target Muscles
Sets
Reps
Flat Bench Press
Chest
3-4
6-8
Incline DB Bench Press
Chest
3-4
6-8
Bent-over Cable Fly
Chest
3-4
8-10
Military Press
Shoulder
3-4
6-8
Overhead Extension
Triceps
3-4
8-10
Friday – Pull Workout B
Workout
Target Muscles
Sets
Reps
Conventional Deadlifts
Back
4
5-6
Single-arm DB Row
Back
3
6/arm
Lat Pulldown (Close Grip)
Back
3
8-10
T-Row (Pronated Grip)
Back
3
8-10
Barbell Curl
Biceps
3
8-10
Cable Bicycle Crunches
Abdominals
3
10/arm
Saturday – Leg Workout B
Workout
Target Muscles
Sets
Reps
Back Squat
Legs
4
6-8
Leg Press
Quads
4
6-8
Reverse Lunges
Quads
4
6/arm
Hip Thrust
Hamstrings
4
8-10
Week 7 – Hybrid Split
You’ll train three muscle groups daily (a combination of upper and lower body split) from the 7th to 9th week.
In the final three weeks of the body transformation training program, you’ll focus on a single-muscle group in each session. It will allow you to work on your weaknesses, bring out muscle definition, and improve your symmetry.
Weekly schedule for the 10th, 11th, and 12th week:
The foundation of a good workout session begins with a couple of hours of training. For example, what you consume before the workout matters a lot.
For an effective training session, you should have your meal 30 minutes to 2 hours before the training, depending on what kind of food you consume.
2. Warm-Up
The warm-up is a crucial part of any weight training routine as it increases blood flow and heart rate helps prevent injuries and improves performance.
Research shows that post-workout stretching helps reduce muscle soreness. So it’s best to perform some stretching exercises after intense training.3Andersen J. C. (2005). Stretching before and after exercise: effect on muscle soreness and injury risk. Journal of Athletic Training, 40(3), 218–220.
4. How Much Should You Lift?
You can lift as heavy as possible as long as you perform the suggested reps and sets with the right form.
5. Optimal Rest Between Sets
The rest time between sets can be sixty seconds to four minutes, depending on what type of exercises you do. For example, if you do compound liftings you need to take 3-4 minutes of break and if you do isolation exercises, the rest time would be 1-3 minutes.
6.Train When You Feel The Most Active
You can train at any time of the day but make sure you feel physically and mentally active to give your hundred percent.
7. Progress Your Level
Progressive overload is crucial for strength and hypertrophy. That’s why you should gradually increase reps, weight, sets, or workout duration over time to get the maximum results.
8. If You’re a Beginner
It is best to focus on form instead of weight for the first couple of months. Once you gain strength and learn the right form, you can progress your workout. You can also start with the one-hour program.
9. Post Workout Meal
You had a great workout session at the gym, but it is time to maximize your results through a post-workout meal. Having some good food and supplements after the training will enhance your results.
I suggest consuming at least 40-50 grams of protein and one gram of carbs per kg of your body weight for optimal results (this is only an example, a nutritionist can help you better in this case).
10. Keep Yourself Hydrated
Keeping yourself hydrated during the workout is crucial for an effective workout session.
Is it Possible to Transform Your Physique in 12 Weeks?
It is not possible to transform your physique in twelve weeks. Building muscles takes time, typically from six months to two years depending on how your body responds, how consistent you are, and what you consume to recover and build your muscles.
A study published by the International Journal of Exercise Science has shown that intermediate lifters gained approximately 2.2 pounds of lean mass after eight weeks of resistance training.5 Thomas MH, Burns SP. Increasing Lean Mass and Strength: A Comparison of High-Frequency Strength Training to Lower Frequency Strength Training. Int J Exerc Sci. 2016;9(2):159-167. Published 2016 Apr 1.
So, if you’ve been working out for a while, you can expect a 2-3 pound gain in two months, and if you are a beginner, you can expect more muscle growth in your initial training period.
Three months may not be enough for muscle building, but it can help you achieve noticeable results if you follow this transformation workout plan properly. If you see muscle growth, you can continue further.
Download The Free 12-Week Transformation Workout Program PDF
Thomas MH, Burns SP. Increasing Lean Mass and Strength: A Comparison of High-Frequency Strength Training to Lower Frequency Strength Training. Int J Exerc Sci. 2016;9(2):159-167. Published 2016 Apr 1.
I’m a personal trainer, fitness blogger, and founder of thefitnessphantom.com.
I help people achieve their best shape through my science-based and practical workout programs.
I’m a personal trainer, fitness blogger, and founder of thefitnessphantom.com.
I help people achieve their best shape through my science-based and practical workout programs.
I’m Murshid Akram, a personal trainer, fitness blogger, and founder of thefitnessphantom.com. I primarily design workout plans and share science-based and practical information that can help you become stronger, functional, and healthier.