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14 Days Glow-Up Challenge — Day 4

This 10-minute beginner workout focuses on back workouts at home. Led by Sophie Jones, it targets core, shoulders, upper back with evidence-based exercises designed for women of all fitness levels.

Exercise Breakdown

10 exercises in Day 4

Warm-up4 exercises
1m 27s
0:25
Warm-up: Cat-Cow

Stretch through the lats, stretch through the core, and just warming up the spine.

spinecoreupper back
low
0:56
Warm-up: Thread the Needle

Taking one arm through, just stretching through the shoulder a little bit here.

shouldersupper backspine
low
1:16
Warm-up: Shoulder Rotations

Big circles all the way up, really push through the roof, extend out all the way down.

shouldersarms
low
1:41
Warm-up: Torso Twist

Do a little torso twist.

spinecore
low
Strength6 exercises
6m
2:25
Dumbbell Shoulder Press

Driving up above the head, making sure we're not bringing our shoulders up by our ears.

shouldersarmscore
medium
3:45
Push-ups

Squeezing my chest muscles together to push away from the floor.

chesttricepsshoulderscore
medium
5:05
Renegade Rows

I don't want you bum in the air, keep it flat and squeeze.

upper backcorearmsshoulders
high
6:25
Russian Twist

Driving it all the way down to the floor, and then driving it to the opposite side.

core
medium
7:45
V-sit

Don't worry about speed here, I want control — I want you to really engage those ab muscles.

corehip flexors
high
9:05
Reverse Flies

I'm trying to imagine I am stretching my arms from one side of the room to the other.

upper backshoulderscore
medium

Muscles Targeted

Primary

coreshouldersupper back

Secondary

spinearmschest

Equipment & Modifications

Equipment Needed

  • dumbbells

Don't Have Equipment?

You can substitute with:

water bottlescanned goodsresistance bands

Available Modifications

  • Use lighter weights if shoulders shrug toward ears
  • Perform on the knees (soft part of the knee)
  • Drop to knees for stability
  • Lift feet off the floor for extra challenge
  • Hold the position for a few seconds and put feet down if struggling
  • Use lighter weights if swinging the body

Coaching Highlights from Sophie Jones

Don't worry about speed here, I want control — I want you to really engage those ab muscles.

Form

Try not to have your elbows flared to the side, tuck those in as tight as you can.

Safety

If you don't feel comfortable, you're gonna drop back to that press-up position on the knees.

Modification

Sophie specializes in functional fitness and full-body circuits. She coaches with infectious energy and crystal-clear form cues.

Form

Health Benefits

Women who want to build real core and shoulders strength without a gym membership. Particularly relevant if you're navigating unexplained weight gain, dating after 40, or aging appearance. No fitness background required. Sophie Jones meets you where you are.

unexplained weight gain

90% relevant

muscle mass preservation (metabolic rate); insulin sensitivity improvement; cortisol management; body composition over scale weight

dating after 40

90% relevant

Stress reduction and emotional regulation through parasympathetic activation; Improved body awareness, confidence, and self-perception; Enhanced posture and physical presence for increased self-assurance; Increased energy and vitality for social engagement; Development of lean muscle mass for metabolic health and body composition

aging appearance

90% relevant

Increased collagen production and skin elasticity through resistance training; Improved circulation and nutrient delivery to skin cells; Enhanced muscle definition and tone to reduce appearance of sagging; Better posture to create a more youthful and confident appearance; Stress reduction and cortisol management (via Yoga/Pilates) to mitigate cellular aging; Improved lymphatic drainage to reduce puffiness

self worth decline

90% relevant

Enhances body awareness and interoception, fostering a more positive self-perception.; Builds physical strength and competence, translating to increased self-efficacy and confidence.; Promotes parasympathetic nervous system activation, reducing stress and improving emotional regulation.; Offers a structured routine and sense of accomplishment, counteracting feelings of helplessness.; Improves posture and physical presence, which can positively impact self-image and how one is perceived.

difficulty losing weight

90% relevant

Increased basal metabolic rate through muscle mass development; Improved insulin sensitivity and glucose regulation; Enhanced hormonal balance (e.g., cortisol management, estrogen metabolism); Reduced visceral fat accumulation; Improved body composition and fat-to-muscle ratio; Stress reduction and improved sleep quality (indirectly supports weight management)

Relevant For

back painbone densitycore strengthflexibilitymetabolismpostureshoulder painstress

Frequently Asked Questions

What muscles does this muscle tone workout target?

The primary targets are core, shoulders, upper back, with secondary activation through spine, arms, chest. Sophie Jones programs 10 exercises across 10 minutes — standout moves include Dumbbell Shoulder Press (shoulders, arms). Push-ups (chest, triceps). Renegade Rows (upper_back, core). According to Michelle Briehler, compound movements like these build functional strength that translates directly to daily life. This is a beginner-friendly session, but the muscle engagement is real. If you're specifically looking for upper back stretches, this session covers that ground. The core strengthening exercises in this session build deep stability that supports everything from your posture to your pelvic floor.

What equipment do I need for this workout?

You'll need dumbbells. Don't have everything? Swap in water bottles, canned goods, resistance bands. Sophie Jones shows exactly when to grab each piece so you're not scrambling mid-circuit. Many women use this as their primary shoulder workouts with dumbbells routine.

Is this workout suitable for beginners?

Yes. Sophie Jones designed this session for people who are starting out or coming back after a break. Modifications shown throughout: Use lighter weights if shoulders shrug toward ears; Perform on the knees (soft part of the knee). The 10-minute format is deliberate — long enough to challenge your muscles, short enough that you'll actually finish.

How long is this workout?

About 10 minutes, start to finish. Includes a warm-up section. Sophie Jones builds you into the work instead of throwing you in cold. 10 exercises total.

Are there modifications available for this workout?

Sophie Jones provides modifications throughout. Examples: Use lighter weights if shoulders shrug toward ears; Perform on the knees (soft part of the knee); Drop to knees for stability; Lift feet off the floor for extra challenge; Hold the position for a few seconds and put feet down if struggling; Use lighter weights if swinging the body. The point isn't to suffer through a move you can't do with good form. Sophie Jones's philosophy is clear: own the movement at your level first. Your body will tell you when it's ready for the next progression.

What health benefits does this 14 Days Glow-Up Challenge workout offer beyond fitness?

This session has direct relevance for women dealing with unexplained weight gain, dating after 40. The combination of exercises Sophie Jones chose targets not just aesthetics but functional health markers — bone density, insulin sensitivity, cortisol regulation. A study by Various authors (2022) found that this type of training produces measurable improvements in these areas. The beginner-level programming means these benefits are accessible without risking injury.

How often should I do this workout?

Two to three times per week with at least one rest day between sessions. Your muscles need 48-72 hours to repair and grow stronger after resistance work. Sophie Jones designed 14 Days Glow-Up Challenge as a progressive series, so doing the workouts in order gives your body time to adapt. If you're sore for more than two days, that's your body saying slow down, not push harder.

Why does this workout emphasize core exercises?

Because core strength is foundational. It supports everything from posture and balance to injury prevention and daily movement quality. Sophie Jones programs core-focused work into this session because it's the area most women lose strength in first during their 30s and 40s. The exercises here aren't random — they build on each other. Research by Superior University highlights the importance of core training for long-term functional independence in women.

Can I do this workout if I have joint pain or stiffness?

Start with the modifications Sophie Jones shows and see how your body responds. Many of the exercises in this session can be scaled — lower range of motion, lighter load, slower tempo. Joint stiffness in your 30s and 40s often improves with consistent movement, not avoidance. That said, sharp pain during any exercise means stop. Pain is information, not a challenge to push through.

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About the Trainer

Sophie Jones

Sophie Jones

Muscle Tone Trainer

From: 14 Days Glow-Up Challenge