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The Workout Split That Changed My Body (And Actually Stuck)

Written by
Jamie Lin

Look, I'm just gonna say it.

I wasted two years doing random workouts with zero strategy. Just vibing at the gym, hitting whatever machine looked empty, wondering why I wasn't seeing results.

Sound familiar?

Then I discovered workout splits, and honestly? Everything changed. My body transformed, my energy skyrocketed, and for the first time ever, I actually wanted to go to the gym.

Let me break down what finally worked for me.

What Even Is a Workout Split?

Okay so basically, a workout split is just a fancy way of saying you're organizing which muscle groups you train on specific days. Instead of doing full-body workouts every single time (exhausting, btw), you're strategically targeting different areas throughout the week.

Game. Changer.

Think of it like meal prepping but for your muscles. You're giving each muscle group proper attention AND enough recovery time. Wild concept, right?

Check out this video!

This guy explains it way better than I ever could. I literally watched this video like ten times when I was starting out.

Why My Old Routine Wasn't Working

Here's the thing nobody tells you.

I used to do full-body workouts four times a week. Sounds productive, right? Wrong. My muscles never had time to actually recover and grow. I was constantly sore, always tired, and my sleep schedule was a mess because my body was in permanent recovery mode.

Plus, I'd spend like two hours at the gym trying to hit everything. Unsustainable much?

Meanwhile, I kept seeing girls on TikTok with these amazing transformations, and they were only working out 45 minutes a day. Turns out they were using splits. Who knew?

The Split That Actually Changed Everything

After way too much research (and honestly some trial and error), I landed on an upper/lower split. Four days a week, alternating between upper body and lower body.

Here's what mine looks like:

Monday: Upper Body (Push Focus)
Chest, shoulders, triceps. Think bench press, shoulder press, tricep dips.

Tuesday: Lower Body
Quads, glutes, hamstrings. Squats, lunges, deadlifts - the works.

Thursday: Upper Body (Pull Focus)
Back, biceps. Rows, pull-ups, bicep curls.

Friday: Lower Body
More glutes, hamstrings, calves. Because yes, we're hitting legs twice.

Rest days? Wednesday, Saturday, Sunday. And honestly, those rest days are non-negotiable now. Recovery is where the magic happens.

Check out this video!

Okay this routine is slightly different from mine but shows you how to structure your split days. Super helpful for beginners.

The Results I Wasn't Expecting

So obviously, my body changed. Like, visibly. I finally started seeing muscle definition in my arms and shoulders. My legs got stronger without getting bulky (that myth needs to die, btw).

But here's what surprised me most.

My energy levels completely shifted. Because I wasn't destroying my entire body every workout, I actually had energy for the rest of my life. Wild concept, I know. I wasn't dragging myself through work or canceling plans because I was too sore to function.

Also? My relationship with exercise totally transformed. Instead of dreading the gym, I started looking forward to it. Each workout felt purposeful, like I was building something. Not just mindlessly burning calories.

Speaking of building things, I had to completely rethink my protein intake strategy once I started seeing real muscle growth. That's a whole other conversation though.

What Nobody Tells You About Starting a Split

Real talk - the first two weeks were rough.

My body was like "um, excuse me, what is this new torture?" I was sore in places I didn't know existed. My arms felt like noodles after upper body days. Walking down stairs after leg day? Forget it.

But then something clicked around week three. My body adapted. The soreness became manageable. I started actually enjoying the burn instead of dreading it.

Also, I had to get real about recovery. That meant actually taking rest days seriously, not just doing hot girl walks and calling it rest. It meant prioritizing sleep, staying hydrated, all that basic stuff we know we should do but like... never actually do.

Check out this video!

This video literally saved me during those first few weeks. The recovery tips are gold.

Is This Split Right for You?

Here's the honest truth.

This split works for me because I can commit to four gym days a week. I have the time, the energy, and honestly, the motivation now that I'm seeing results. But that doesn't mean it's perfect for everyone.

If you're just starting out? Maybe try three days a week first. Full body workouts aren't evil - they just weren't right for my goals. Some people thrive on them, especially beginners building that initial foundation.

If you're already pretty active and want to level up? This could be your moment. An upper/lower split is like the sweet spot between beginner routines and those intense bodybuilder programs that require living at the gym.

And if you're curious about how the Victoria's Secret models train, spoiler alert - most of them use some version of a split routine too. Just saying.

My Biggest Mistakes (So You Don't Make Them)

Okay, confession time.

I definitely went too hard at first. Like, way too hard. I thought more weight and more reps automatically meant better results. Wrong. I ended up with a shoulder injury that set me back three weeks. Not cute.

Learn from my mistakes: Start lighter than you think you need to. Focus on form first, weight second. Your ego might take a hit, but your body will thank you.

Also, I tried to follow Pilates routines on my rest days because I felt guilty about not working out. Another mistake. Rest days are called rest days for a reason. Your muscles literally need that time to repair and grow.

And please, please don't compare your week one to someone else's week fifty-two. I spent way too much time feeling discouraged because I didn't look like the fitness influencers I followed. Plot twist: they've been training for years, and half those photos are edited anyway.

The Mental Shift That Mattered Most

You know what changed everything?

Stopping the whole "workout as punishment" mindset. I used to exercise because I ate too much or wanted to look a certain way. Now? I workout because it makes me feel powerful. Because I want to see what my body can do.

That shift is huge.

Some days I'm lifting heavier than I ever thought possible. Other days I'm just showing up and doing the work. Both are valid. Both are progress.

And honestly, having a structured split helped with this mental shift too. I'm not constantly questioning whether I'm doing enough or doing it right. I have a plan. I follow the plan. I trust the process.

Real Talk: The Downsides

Because let's be honest, nothing's perfect.

This routine requires commitment. Four days a week, every week. If you travel a lot or have an unpredictable schedule, it can be tough to maintain. I've definitely had weeks where I had to shuffle things around or miss workouts entirely.

Also, you need access to decent equipment. While you can modify exercises for home workouts, having a gym membership makes this split way easier to follow. Dumbbells, barbells, cable machines - they all make a difference.

And the time investment is real. Between the actual workout, getting to the gym, showering after - you're looking at probably 90 minutes per session. That's not nothing.

But for me? Totally worth it. The results speak for themselves.

What I'd Tell My Past Self

If I could go back to that girl doing random workouts with zero plan?

I'd tell her to stop overthinking it. Start simple. Pick a split, commit to it for at least eight weeks, and actually track your progress. Take photos, write down your weights, notice how you feel.

I'd tell her that soreness doesn't equal effectiveness. That rest days are productive days. That building muscle takes time, and that's okay.

And I'd definitely tell her to stop following those fitness accounts that make her feel bad about herself. Unfollow anyone who triggers comparison or makes working out feel like a chore. Follow people who inspire you and make fitness look fun.

Oh, and maybe look into what supplements actually work instead of wasting money on random things Instagram ads promised would transform your body overnight.

Where I'm At Now

Six months into this split, and I'm honestly in the best shape of my life.

Not just physically - though yeah, I have abs now which is still wild to me. But mentally too. I'm stronger, more confident, more consistent. Working out has become this non-negotiable part of my routine, like brushing my teeth.

I've had to adjust things here and there. Some weeks I swap exercises based on what equipment's available or how my body's feeling. I've learned to listen to my body better - pushing when I can, backing off when I need to.

And the best part? This feels sustainable. I'm not counting down the days until I can quit or dreading my next workout. This is just... my life now. In the best way possible.

So yeah.

If you're stuck in that same place I was - doing random workouts, not seeing results, feeling frustrated - maybe it's time to try a structured split. It might not be this exact routine, but finding what works for your body and your schedule could be the game-changer you need.

Trust me on this one.

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Written by
Jamie Lin
Jamie Lin is a product writer and reviewer at Zenify. She covers lifestyle, wellness, luxury, coffee, sex tech, and gaming. Originally from Michigan and of Chinese heritage, Jamie now resides in San Francisco with her partner and a cat named Mochi. When she’s not testing the latest gadgets, she enjoys exploring new coffee shops, indulging in gourmet cuisine, and practicing yoga.