The Upper/Lower Split: A 4-Day Workout Plan

If you can commit to four gym sessions a week and you want a straightforward, results-driven structure, the upper lower split is one of the best places to start. It suits intermediate lifters who have outgrown full-body beginner routines, as well as busy people who want balanced progress across the whole body without living in the gym. If you can only train two or three days some weeks, it still adapts neatly, which is why so many UK lifters keep coming back to it.

What is the upper/lower split?

The upper/lower split divides your training week into two types of session: upper-body days (chest, back, shoulders and arms) and lower-body days (quads, hamstrings, glutes and calves). Over a standard four-day week you hit each half of the body twice, giving every major muscle group two quality training stimuli every seven days.

That twice-weekly frequency is the real advantage. Research on muscle growth consistently points to training a muscle roughly twice a week as a reliable driver of progress for most people, and the upper/lower structure delivers exactly that without the complexity of a six-day programme. It sits comfortably between full-body training and a more advanced push/pull/legs split, making it a sensible next step once basic full-body sessions stop feeling challenging.

Who does it suit?

• Intermediate lifters who have run a beginner full-body plan for a few months and want more volume per muscle group.
• Busy people who realistically manage four sessions but not five or six.
• Anyone chasing balance across strength and size, rather than specialising in one lift or body part.

Complete beginners aren't left out either. If you're brand new, it's worth reading our beginner's guide to building muscle first, then easing into this once your technique is solid.

The 4-day weekly schedule

A common layout is Monday, Tuesday, Thursday and Friday, keeping Wednesday and the weekend for recovery. You alternate upper and lower days so no muscle group is trained on consecutive days.

Day 1 – Upper (strength focus)

• Barbell bench press – 4 sets x 5-6 reps
• Bent-over row – 4 sets x 6-8 reps
• Overhead press – 3 sets x 6-8 reps
• Lat pulldown – 3 sets x 8-10 reps
• Barbell curl – 3 sets x 8-10 reps
• Triceps rope pushdown – 3 sets x 10-12 reps

Day 2 – Lower (strength focus)

• Barbell back squat – 4 sets x 5-6 reps
• Romanian deadlift – 3 sets x 6-8 reps
• Leg press – 3 sets x 8-10 reps
• Seated leg curl – 3 sets x 10-12 reps
• Standing calf raise – 4 sets x 12-15 reps

Day 3 – Upper (hypertrophy focus)

• Incline dumbbell press – 4 sets x 8-10 reps
• Seated cable row – 4 sets x 10-12 reps
• Lateral raise – 3 sets x 12-15 reps
• Face pull – 3 sets x 12-15 reps
• Incline dumbbell curl – 3 sets x 10-12 reps
• Overhead triceps extension – 3 sets x 10-12 reps

Day 4 – Lower (hypertrophy focus)

• Front squat or hack squat – 4 sets x 8-10 reps
• Hip thrust – 3 sets x 10-12 reps
• Walking lunges – 3 sets x 10-12 reps per leg
• Leg extension – 3 sets x 12-15 reps
• Seated calf raise – 4 sets x 15-20 reps

Start each session with 5-10 minutes of light cardio and a few warm-up sets on your first lift. A pair of lifting straps or a decent belt from our training accessories range can help you handle heavier rows and squats safely as loads climb.

How to progress

Structure alone won't build muscle. Progress comes from progressive overload: gradually asking your muscles to do more over time. The simplest approach is double progression. Pick a rep range, and once you can hit the top of that range on every set with good form, add a small amount of weight next session and work back up.

• Log every session. Note the weight, sets and reps so you know exactly what to beat.
• Add load in small jumps. 2.5kg on big lifts, 1-1.25kg on isolation work, is plenty.
• Prioritise the strength days. Aim to improve your top-set numbers on squat, bench, row and press over the weeks.
• Deload occasionally. Every 6-8 weeks, cut your weights by around 10% for a week to let your body catch up.

How supplements fit around your training

No supplement replaces consistent training, sleep and a sensible diet, but a few well-chosen basics make the work easier to sustain. Protein is the foundation: protein contributes to the growth and maintenance of muscle mass, so hitting your daily target matters on a four-day plan. If whole food falls short, a scoop from our protein powders range is a convenient top-up, and our guide on how much protein you need per day helps you set a target.

Creatine monohydrate is one of the most researched sports supplements available and a popular choice on the strength-focused days: creatine increases physical performance in successive bursts of short-term, high-intensity exercise, an effect linked to a daily intake of 3g. Around 3-5g daily is the usual approach, and a single tub typically lasts well over a month, making it one of the better-value staples in any routine. For the tougher hypertrophy sessions, many pre-workouts are built around caffeine, which helps increase alertness and improve concentration before you lift, though caffeinated pre-workouts aren't suitable for under-18s or anyone pregnant or breastfeeding, so check the label and keep total daily caffeine sensible.

Recovery matters just as much as the sessions themselves. Staying hydrated across four training days is simple good practice, and our hydration and electrolytes range makes it easy to top up around your workouts. Our overview of the science of muscle recovery covers how sleep and nutrition tie it all together.

The bottom line

The upper/lower split is a proven, flexible way to train each muscle group twice a week across four manageable sessions. Pair it with steady progressive overload, a diet built around your protein target, and a couple of well-chosen basics like creatine and protein, and you have a plan you can run for months. Ready to stock up? Browse the full NE Commerce range and fuel your next block of training with fast, tracked UK delivery.

A quick note

This article is general information, not medical or nutritional advice. Food supplements are not a substitute for a varied, balanced diet and a healthy lifestyle, and should not be used to prevent or treat any illness. Always read the product label, do your own research, and speak to a qualified doctor, pharmacist or registered nutritionist before starting a new supplement — especially if you are pregnant, breastfeeding, under 18, taking medication or managing a health condition.