What a DEXA Scan Can Tell You, and What You Do With It
You’ve been training consistently, your clothes fit differently, and you’re lifting heavier weights. Then you step on the scale and discover that apparently nothing has happened. Your bathroom scale has a remarkable talent for leaving out the interesting parts.
Body weight tells us how much you weigh, but it doesn’t explain what makes up that weight. A DEXA scan gives us a much clearer picture of your body composition, helping us understand where you are now and track changes over time. What you do with that information is where training, nutrition, and coaching come in.
More information than the scale can give you
DEXA uses low dose X-rays to estimate body fat, lean tissue, and bone mineral content. It provides information about your whole body and individual regions, including your arms, legs, and trunk. BodySpec’s (the scanner coming to RB) reports also include an estimate of visceral fat, the fat stored deeper in your abdomen around your organs.
That detail can help explain progress your scale misses. You might lose fat while gaining lean tissue and see relatively little change in body weight. Or your weight could stay steady while your body composition gradually moves in a direction you weren’t expecting. Many times this can be great and exactly what we are looking for, but sometimes we miss some things that may not be in the case of visceral fat.
Waist measurements are useful too, particularly for tracking abdominal size and related health risks. They’re affordable and easy to repeat, but they don’t tell us how much lean tissue you’re carrying or how fat and lean tissue are distributed throughout your body. DEXA adds another layer of information to the measurements and training progress we already follow.
What makes DEXA different?
Smart scales and many gym scanners use bioelectrical impedance (BIA) to estimate body composition from how an electrical current travels through your body. Skinfold testing uses measurements of fat beneath the skin, while methods such as the Bod Pod estimate composition from body density. Each can be useful, with its own assumptions and limitations. We may also add that Bod Pod can be rather impractical since you will be feeling like you’re in a dunk dank over and over again!
DEXA’s strength is the detail it provides about fat, lean tissue, and bone, both overall and by region. It’s a precise, repeatable method when testing conditions are consistent, and it gives us considerably more to work with than a single body fat percentage.
It still isn’t a perfect measurement. Lean tissue includes water and other nonfat tissues, so a change in the report doesn’t automatically equal muscle gained or lost. Hydration, stored carbohydrate, positioning, and differences between scanners can all affect the results.
That’s one reason we plan to bring the same BodySpec DEXA van back in the new year. Using the same scanner, similar preparation, and ideally the same technician helps reduce those sources of variation and makes comparisons more useful. Follow BodySpec’s preparation instructions, and we’ll look for meaningful trends alongside your strength and other progress rather than getting carried away by a tiny change between reports.
What the results say about health
Body composition is one part of health, alongside strength, cardiovascular fitness, blood pressure, bloodwork, sleep, and how you feel and function. A scan gives us useful information about your tissues, while those other measures help complete the picture.
Higher visceral fat, unexpectedly low lean mass, or concerning bone findings can be reasons to look more closely. These findings need context, and some warrant a conversation with your healthcare provider. A scan alone cannot diagnose the cause or determine the right treatment.
The bone information also has limits. A whole body composition scan does not replace a dedicated hip and spine bone density examination used to diagnose osteoporosis. It can provide information worth following up on, with your healthcare provider guiding the next step.
Is it harmful?
DEXA involves a very low dose of radiation, and the scan is noninvasive, generally painless, and requires no recovery time. The exact exposure depends on the scanner and protocol, so BodySpec can answer questions about its equipment.
Body composition scanning should not be performed during pregnancy. Complete BodySpec’s screening process during your sign up and follow its instructions, including letting them know about possible pregnancy, recent contrast imaging, or other factors that might affect your scan.
Putting the information to work
This is the part we get excited about. A scan can show you where you’re starting, and then we can get to work on the adaptations you want to make.
Exercise is a major driver of that process. Progressive strength training gives your muscles a reason to grow and helps preserve them during weight loss. Weight bearing activity and appropriately selected resistance and impact exercise can support bone health; while aerobic exercise builds fitness, increases energy expenditure and can contribute to reducing visceral fat.
Nutrition and recovery help you respond to that work. Eating enough nutritious food and choosing an appropriate overall food intake support your goals, while sufficient sleep and recovery help you train consistently and productively. Your scan can help focus the conversation, but it cannot prescribe your meals, choose your exercises, or know how much training fits your life.
Our goal as your coaches is to combine the results with what we already know about you: your goals, training history, current strength, schedule, and habits. Then we can identify a few useful changes, whether that means progressing your lifting, getting more consistent with classes, adding conditioning, or improving how you fuel and recover.
The planned return visit gives us an opportunity to assess how things are moving after you’ve had time to put those changes into practice. Alongside the scan, we’ll keep watching your strength, energy, fitness, and other measures that matter to you. Better information helps us make better decisions, and consistent action gives us something worth measuring.
BodySpec is coming to Resilient Body
The BodySpec DEXA van will be at Resilient Body on Thursday, November 5, 2026, from 11:30 a.m. to 6:30 p.m. We’ve arranged a special member rate, with 24 appointment slots available and scanning appointments taking approximately 15 minutes.
You can establish your baseline right here at your own gym, without a separate trip into the city or going out of your way. Use this appointment link here:
MEMBERS = https://resilient-body.as.me/DEXAM
NON-MEMBERS = https://resilient-body.as.me/DEXANM
From there you can ask your coach to sign you up for your requested slot. Or you can scan the QR code on the email confirmation link with a special promo code to reserve your appointment.
After the scans make sure to talk with your coach about how the results can support your next goals.
📣 Quick Announcements:
DEXA Scan Sign-Ups Are Open!
BodySpec is coming to Resilient Body Thursday, November 5, from 11:30 a.m.–6:30 p.m. Get a detailed look at your body composition right here at the gym, with a special member rate and 24 slots available. Sign up and pay through Acuity, then follow your confirmation instructions to select your scan time, or ask your coach for help.
🎃October Challenge is here! The Hold & Haul Gauntlet will be held in both class and PT sessions. It’s super quick (5minutes), so if you want to give it a whirl, you can also do it during open gym or at sessions end as long as a coach is here to watch 😎
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