90-Day DEXA Check-In: Leaner, Stronger, Still Shipping Code
Three months of minimalist strength training plus low-intensity cardio reduced my body-fat by 1.9% and added 5.7 lb of muscle, and didn’t require crash-diets, 5a.m. runs, or any other heroic measures.
From Baseline to Check-In
Back in late February I booked a baseline DEXA scan so I could tell whether the fat-loss phase I was about to start was really going to work. After 90 days of consistent lifting, extra walking, and a very modest (sometime non-existent) calorie deficit, I stepped back into the scanner last week. Here’s what changed and exactly how I got there.
The DEXA Results
Metric | 25 Feb 2025 | 4 June 2025 | Change |
---|---|---|---|
Body-fat % | 19.1% | 17.2% | -1.9% |
Lean mass | 122.7 lb | 128.4 lb | +5.7 lb |
Fat mass | 28.9 lb | 26.5 lb | -2.4 lb |
Total mass | 157.3 lb | 160.7 lb | +3.4 lb |
The total mass increase doesn’t matter since it was all lean tissue.
What the Training Actually Looked Like
- Time-optimized upper/lower strength training — ~4 sessions/week, usually <45 min each.
- “Barely-broke-a-sweat” cardio — averaging ~8k steps/day. When I needed more, I added a 15–20 min treadmill incline walk (still Zone 2, nothing crazy).
- No running, HIIT, or circuits. Only steady walking + lifting.
- Recovery — 2 colds (6 lifting days lost) and one short vacation; on those weeks I dropped volume by half or more and got back on track after I felt better.
Nutrition in One Paragraph
Maintenance calories or very slight deficit on most days. Protein 1 g/lb. No foods were off-limits; but I did use a 5-day moving average to give me some feedback on my diet (while smoothing out daily fluctuations).
Takeaways
- Body weight is only a proxy. Only using a body weight scale would’ve told me a different story. One of failure — I gained weight when I wanted to lose weight. A DEXA gave me the real story.
- Consistency beats perfection. Missing a few workouts wasn’t fatal; quitting would have been.
- Low-intensity movement adds up. Steps + gentle incline walks handled cardio without wrecking joints or recovery.
- A minimal program still works. Two compound lifts per session was enough stimulus as long as you push hard.
Debugging Common Myths
Myth | What I Realized |
---|---|
“You have to starve to lose fat.” | A small deficit and adequate protein was enough to drop fat while gaining muscle. In fact, heavy dieting would have made me lose muscle too. |
“You need to spend hours lifting to grow muscle.” | Lift smarter, not harder. I made sure my time at the gym was efficient and optimized for muscle growth, not for my ego. |
“Busy schedule means no gym time.” | This has been the least time committment I’ve needed for a fitness routine. I was able to juggle my full-time job and toddler care without feeling overwhelmed. I was honestly surprised to see the numbers. |
What’s Next?
I am a bit skeptical of my results and perhaps I’m still getting “beginner gains”. But because of how easy this program was to follow, I’m planning on continuing for a muscle-gain phase. The main difference will be switching to a gentle calorie surplus to keep recovery and muscle building high.
To keep fat gain under control and my cardio engine healthy, I’m experimenting with:
- Rowing — short, easy sessions after lifting.
- Rucking — starting light and gradually adding load/time.
I’ll run another DEXA mid-August and report back.
Next Reads
Next week I’ll share the exact cardio routine I followed to achieve these results. In the meantime, here are some related posts you might find useful:
- (Part 1/5) Why Hybrid Fitness Works for Software Engineers — why blending strength and cardio fits desk-bound careers and busy schedules.
- (Part 2/5) Upper-Lower Strength Plan for Busy Parents — the exact template that powered these results.
- (Part 3/5) Cardio Layering — the exact cardio approach I used to keep fat loss sustainable.