The Smartest Way to Lose Weight: Rucking (Weighted Vest / Backpack)
You’ve heard “just walk more” or “walk it off.” And yeah—walking is a great baseline. But if your goal is real weight loss (and especially fat loss), plain walking often isn’t enough because the intensity is too low.
Rucking is “walk it off”… but heavier. You take the safest, most repeatable form of cardio and crank the demand without turning it into a joint-destroying grind.
That’s why rucking (walking with weight) is one of the smartest methods I’ve ever used. It helps you stay in the zone that matters for fat loss while keeping your training sustainable.
Quick context: My name is Preston Shamblen. I lost 90 lbs with rucking + strength training and got below ~10% body fat naturally (no TRT, no steroids, no shortcuts).
Watch the video
This is the exact talk I recorded outside the entrance to Burkett Trail before a ruck in my 50 lb Wolf Tactical vest:
The fat-burning zone (simple, practical)
When I say “fat-burning zone,” I mean a steady intensity where you can keep moving for a long time and rack up serious work without redlining.
Rule of thumb: fat-burning zone is about 60–70% of your max heart rate.
Max HR estimate: 220 − your age (rough estimate, but good enough for basic planning).
Example: If you’re 40, max HR ≈ 180. Your 60–70% zone is about 108–126 bpm.
Rucking makes it easier to hit and hold that zone because adding weight raises your heart rate without requiring sprint-level speed.
Rucking vs walking calories: why it scales
Normal walking can work for beginners, but it’s often “too cheap” metabolically. You can walk an hour and barely move the needle. Add load and the work ramps up fast.
In real-world use, rucking can burn roughly 2–3x as many calories as an unweighted walk depending on your bodyweight, the load you carry, your pace, terrain, and how hard you’re working. That “scaling” is exactly why rucking is such a powerful weight loss tool.
The wearable problem: Apple Watch undercounts rucking
Your Apple Watch and most fitness trackers are fine for normal walking, but they often undercount rucking because they weren’t built to model load well. They’ll see steps, pace, and heart rate… but many setups still log it like a casual stroll.
That’s why I built free rucking calculators + a free app: so your ruck doesn’t get tracked like a normal walk and so you can actually compare different weights and carry styles.
Works offline. No paywall. Supports weighted vest vs backpack.
Weighted vest vs backpack: why the toggle matters
Carry style changes the work. A weighted vest distributes load front/back. A backpack sits behind you and demands more stabilization and posture control.
In our model, backpack rucking is about ~7% harder than a vest at the same weight, pace, and distance—so the app and calculators let you toggle the carry type.
My hard lesson: I lost weight but got “fatter”
When I was chasing the last 20 pounds (after losing ~70), I got too aggressive. I was biking 30–40 miles at night while staying in a calorie deficit, trying to force the scale down.
Then the InBody scan hit me: I was lighter, but technically fatter—because the weight I lost was mostly muscle. That’s the opposite of what you want.
There’s a term tied to this kind of “eager deficit” mistake: gluconeogenesis—the body making glucose from non-carb sources, which can include amino acids from muscle tissue when you’re pushing too hard while underfed.
That’s when I leaned harder into rucking. It helped me keep cutting fat while staying strong, because it’s easier to control intensity and stay in the zone you’re actually aiming for.
How to ruck for weight loss without burning out
- Start light: 10–20 lb vest/ruck if you’re new. Build the habit first.
- Stay in the zone: aim for that 60–70% range most days (you should be able to talk in short sentences).
- Progress slowly: increase only one variable at a time (weight OR distance OR pace).
- Track correctly: use the app or calculators so your work isn’t undercounted.
Gear I use
If you want a solid vest setup for walking/rucking, here’s the one I use:
Wolf Tactical Adjustable Weighted Vest
Balanced front/back load. Built for real training. #WolfTactical
View the Wolf Tactical Vest on AmazonAs an Amazon Associate I earn from qualifying purchases.
Proof (before/after)
I’m not selling magic. I’m selling consistency. Rucking is what helped me finish the job—especially the last stubborn fat.
Questions or feature requests? Drop a comment on YouTube—I actually read them and improve the tools.
Free links
Rucking App (Android / Google Play):
https://play.google.com/store/apps/details?id=com.ruckingpro.calculator
Rucking Calorie Calculator (web):
Rucking Calorie Calculator
Rucking Weight Loss Calculator (web):
🏋️♂️ Rucking Weight Loss Calculator – How Long Will It Take?
