Classic 3-Day Bodybuilding Split: Full Routine + Variations

The 3 day bodybuilding split is a popular form of workout routine, commonly used by weightlifters who want to gain strength and put muscle on their frame. It’s a low volume split, so it should work well for the genetically typical trainee and for trainees with slower recovery. The 3 day bodybuilding split can be used occasionally for periods of 6-8 weeks, before deloading.

With this workout routine, each main muscle group is directly worked once a week. Each work day is followed by a rest day so your muscles can recover.

What Makes This Split Work

The routine revolves around the main compound lifts, which are proven to be much more effective than isolation exercises for adding muscle mass. The low volume and lower number of exercises let you lift with much greater intensity, without the fear of overtraining. Intensity and progressive overload are two of the main factors in increasing muscle mass.

Compound exercises are any exercise that involves more than one major muscle group and more than one joint at a time — unlike isolation exercises, where only one joint is activated (think preacher curls, leg extensions, dumbbell flies). Compound exercises are the quickest route to building muscle mass.

Because compound movements like the bench press, squat, and deadlift let you move far more total weight than isolation exercises do, they recruit more muscle fibers and tax the muscle harder. Over time, that’s exactly the process that makes muscle bigger and stronger — and bigger muscle mass also burns more calories just to sustain itself.

Does Training Each Muscle Once a Week Actually Work?

Worth being upfront about: a lot of current training research suggests hitting each muscle group roughly 2-3 times a week tends to produce better hypertrophy results than a classic once-per-week “bro split” like this one, mainly because it keeps muscle protein synthesis elevated more consistently across the week. If pure research-optimal frequency is your only priority, our upper/lower split or 5×5 routine will hit that higher frequency more directly.

That said, this classic split has stuck around for decades for real reasons. Training each muscle just once a week lets you bring far more total volume and intensity to that muscle in a single session, without worrying about interference from training it again a day or two later.

It’s simple to follow, easy to stay consistent with, and it remains a completely legitimate way to build a serious physique — plenty of old school bodybuilders built genuinely impressive frames on exactly this kind of split.

If you’re a beginner or you respond well to higher frequency, the alternatives above are worth a look. If you’re more advanced, recover slowly, or you just enjoy really digging into one or two muscles per session, this classic split is still a great choice.

The Classic 3-Day Bodybuilding Split

Below you can find the workout routine:

Day One (Back and Biceps)

Deadlifts (3 x 6-8 reps) / Bent over barbell rows (3 x 6-8 reps) *
Wide grip pull ups / chin ups (3 sets to failure) *
Bicep curls (3 x 10 reps)

Day Two (Chest and Triceps)

Flat bench press (3 x 6-8 reps) / Incline bench press (3 x 6-8 reps) *
Dips (3 x 10 reps)
Close grip bench press / triceps push downs (3 x 12 reps) *

Day Three (Legs and Shoulders)

Squats (3 x 8 reps)
Leg press 1 x 20 reps
Leg curls (3 x 8 reps) / Straight legged deadlifts (3 x 8 reps) *
Calf raises (3 x 12-15 reps)
Upright barbell rows (3 x 12 reps) / side raises (3 x 12 reps) *

* You should switch exercises every other week.

Alternative: The Compound-Focused Variation

If you want more exercises per session and a more detailed pyramid-style rep scheme, this is a fully-developed alternative built around the same core compound lifts.

The training split

Monday – Chest and triceps
Tuesday – light cardio or rest *
Wednesday – Back and biceps
Thursday – rest or light cardio *
Friday – Legs and shoulders
Saturday – rest or light cardio *
Sunday – rest

* Depending on your recovery ability you can do a light 30-40 min cardio session or you can take a day off from training.

Day 1 – Chest and Triceps

Incline dumbbell bench press – 3 x 10,8,6 (after the warm up, pyramid your way up to 5 reps to failure)
Barbell bench press – 3 x 10,8,6
Pec-deck fly or dumbbell fly – 3 x 15 (pick a weight that you can easily do 12-15 reps with)

Triceps dips – 3 x 6-8 reps
Triceps extension – 2 x 12-15 (light weight)

Day 2 – Back and Biceps

Deadlifts – 4 x 5 (after the warm up, do 4 sets of 5 reps with 80% of your 1RM)
Chin ups or pull ups – 4 x 8-10 reps
One arm dumbbell row or a chest supported row – 3 x 12 reps

Standing barbell curl – 3 x 8
Concentrated curl – 2 x 10

Day 3 – Legs and Shoulders

Squats – 3 x 8-10 reps (after the warm up, do 4 work sets — the last set should be to absolute failure, be sure to have a spotter)
Lunges – 3 x 10 reps
Leg press – 3 x 10-12 reps
Leg curl – 4 x 10 reps

Barbell or dumbbell shoulder press – 3 x 8-10
Seated lateral raises – 3 x 10-12
Bent over lateral raises or reverse pec-deck – 3 x 10

Be sure to take a good rest between the weight lifting days, because the amount of volume on some of these days is a bit high for natural trainees.

Alternative: The 3-Day Split for Mass

This variation groups muscles differently — chest and back together, then legs, then shoulders and arms — spread across a full week with extra rest between sessions. It’s a good option if you want to push serious total tonnage on your two biggest muscle groups in the same session.

Day 1 — Chest / Back

(Only work sets are listed — do as many warm-up sets as you need, but don’t waste too much strength on the warm-ups.)

1. Incline bench press – 2 work sets of 8 reps
2. Chin ups – 2 work sets to failure
3. Dips – 2 work sets of 8 reps
4. Barbell rows / Deadlifts – 2 work sets of 8 reps (alternate between these exercises each week)
5. Dumbbell pullovers – 1 set of 10 reps
6. Dumbbell flies – 1 set of 10-12 reps

Day 2 — Rest or light cardio like walking or stationary bike

Day 3 — Thighs / Calves / Abs

1. Barbell squat – 4 work sets of 10 reps
2. Leg curls – 4 work sets of 10-12 reps
3. Dumbbell lunges – 3 sets of 10 steps
4. Standing calf raises – 4 sets of 12-15 reps
5. Crunches – 4 sets of 12-15 reps

Day 4 — Light cardio for 25-30 minutes or rest

Day 5 — Shoulders / Arms

1. Seated barbell/dumbbell press – 3 work sets of 8-10 reps each
2. Close grip bench press – 2 work sets of 12-15 reps
3. High pulls with barbell, or dumbbell fly (choose one, only use that exercise) – 2 working sets of 10 reps each
4. Barbell curl – 1 warm-up set of 8 reps, then 3 working sets of 8-10 reps each, with a drop set on the final set
5. Leg raises – 2 work sets of 10-12 reps

Days 6 and 7 — Rest

Nutrition for the 3-Day Split

Nutrition is one of the most important factors for muscle growth. You can follow whatever routine you like, but without a proper diet there is no way to build muscle mass.

If you want to build muscle you need to follow a high calorie diet plan. The number of calories you consume during the day should be higher than the calories you burn, in order to create a caloric surplus. Also, a very important thing is to consume calories from clean macronutrient sources and ditch the junk food. Follow a high protein and moderate carbohydrate diet — during the muscle building period, try consuming about 1 to 1.5 grams of protein per pound of bodyweight (see how much protein you actually need to build muscle for the full breakdown).

How Much Weight Should You Gain?

Your aim should be an additional 1lb (450g) per week. Gaining 1lb per week is definitely possible and doable — how close you actually get depends on how close you already are to your genetic ceiling. If you’re a beginner, you can even surpass this; as you get more advanced, gaining mass gets trickier.

If you’re going to gain muscle, don’t be afraid of gaining a bit of fat along with it. What you need to do is add some additional calories to your already solid diet — stay on your current muscle building diet and add a protein shake to your daily eating routine. Here’s a simple recipe:

• 1.5 liters of low fat milk
• 3 scoops of whey protein
• 1 tablespoon of peanut butter
• A fruit or two for taste and additional fiber — strawberries or cherries work well

Drink this shake over the course of the day, between or after your meals.

Supplements Worth Considering

If you’re not already using supplements, this is a good time to start with the basics:

• Creatine monohydrate — 10 grams per day for a week, then bring it down to 5 grams a day (before and after your workout)
• 10 grams of glutamine a day
• 5-8g of fish oil
• A multivitamin/multimineral supplement

Alongside all this eating, pay attention to your rest. You should be getting at least 8 or 9 hours of sleep every night. Couple this with a half-hour nap sometime during the day if you can manage it.

Progression and Deloading

The routine doesn’t look too fancy or spectacular, but give it a run for 8 weeks and you’ll likely be surprised with the results. Start with lower weights and strict form, and try to add pounds to the bar every week or every two weeks.

Remember, progressive overload is one of the main factors contributing to muscle growth. It’s not important how much you can lift when you start — what’s important is how much the weight on the bar increases over time. Small increments every week or every other week will add up to a real jump in total weight by the end of an 8-week period.

If you’ve been pounding the weights hard for a while, it’s worth taking a deload. Take a week of active rest, then return to training with the weights cut by 15-20% — you’ll surpass your old maxes again within a few weeks. From there, aim to increase the weights you lift by 5-10lbs every week or every second week, focusing on the big movements: squats, deadlifts, bench press, military press, leg press, barbell rows, dips, and pull ups.