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Phase 2: Core & Refinement — Dropping the Arm Day and Getting Smarter

a person in blue shirt holding black dumbbells

Photo by Wand Fotografia on Pexels.com

Man performing chest press on gym machine

By fall 2024, the body part split had done its job. I had a foundation, a feel for the gym, and enough data on my body to know what was working. But something was missing — core work and more intentional shoulder volume weren’t getting the attention they deserved in a pure push/pull/legs setup.

So Phase 2 was about refinement, not reinvention. We dropped the dedicated arms day (RIP, but it was time) and redistributed that volume into smarter day pairings. Abs and core became a genuine priority, not an afterthought tacked onto the end of a session.

The New Split

What changed structurally was the frequency of core work. Instead of maybe doing a few cable crunches at the end of a session if energy allowed, abs were now programmed deliberately into Day 2 and Day 4. That shift made a real difference.

Muscle Focus by Day

Day 1 — Chest & Triceps

Chest day got a serious upgrade this phase. We kept the Chest Press Machine and Incline Chest Press as anchors, but added the Seated Dip Machine for a compound triceps finisher, and kept the Butterfly / Pec Deck for chest isolation. The dip machine is underrated — it hammers triceps and lower chest simultaneously, and the assisted version lets you push past failure safely.

Day 2 — Legs & Abs

This was the biggest structural improvement of Phase 2. Barbell Squats entered the program here — a massive step up from machine-only leg work. We also introduced Barbell Deadlifts on leg day, which meant the posterior chain was finally getting serious attention. Core work was built into the session with Cable Crunches and Romanian Deadlifts for the abs and lower back. Check out cable crunches if you haven’t tried them — they’re one of the most effective weighted ab exercises out there.

Day 3 — Back & Biceps

The pull day evolved significantly. Back Extensions (hyperextensions) came in for lower back health, and we added serious variety to the bicep work: Barbell Curls, Cable Curls, Hammer Curls, and eventually Preacher Curls on the machine. The Lat Pulldown and Seated Cable Row stayed as the primary back movers, with the barbell deadlift rotating in for heavy posterior chain loading.

Day 4 — Chest, Shoulders & Abs

This was a genuinely interesting day — a second chest stimulus with a major shoulder focus stacked on top. Shoulder Press Machine, Lateral Raise, and Rear Delt Fly all made appearances, along with another round of chest isolation work. Finishing with weighted cable crunches and Russian twists meant abs got hit twice per week. The Hack Squat Machine also started showing up here occasionally as extra quad volume.


Phase 2 Weight Update

WorkoutsTotal SetsTotal RepsTotal Volume Lifted
428679,449886,478 lbs

Here’s where things stood by the end of Phase 2 (November–December 2024):

Day 1 — Chest & Triceps

Day 2 — Legs & Abs

Day 3 — Back & Biceps

Day 4 — Chest, Shoulders & Abs

Strength made a real jump this phase, especially on compound lifts. The barbell squat and deadlift entering the program changed the trajectory of everything lower body related.

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