A scale can’t tell you if you lost fat or muscle. DEXA can.

We pulled the most impressive body composition changes from our DEXA database — all real, anonymized results. Here are the Top 10 leaderboards for Fat Loss and Muscle Gain, split by male and female.

Female Fat Loss

Top 10 Fat Loss leaderboard — Female clients ranked by pounds of fat lost, measured by DEXA scan

#1 (40s) lost 42.8 lb of fat in 286 days. #4 lost 24.9 lb of fat while gaining 12.0 lb lean — her scale only dropped ~13 lb. The 40s claim five of the ten spots.

What Fat Loss Looks Like on a DEXA Scan

Red = muscle, gold = fat, blue = bone.

Lost 26.0 lb of fat · 187 → 150 lb · Age 44

Female fat loss number 1 DEXA scan before at 187 lb and 38.7 percent body fat — Before: 187 lb · 38.7% BF

Female fat loss number 1 DEXA scan after at 150 lb and 30.8 percent body fat — After: 150 lb · 30.8% BF

Lost 25.4 lb of fat, gained 3.7 lb lean · 201 → 180 lb · Age 33

Female fat loss number 2 DEXA scan before at 201 lb and 39.3 percent body fat — Before: 201 lb · 39.3% BF

Female fat loss number 2 DEXA scan after at 180 lb and 29.9 percent body fat — After: 180 lb · 29.9% BF

Lost 24.9 lb of fat, gained 12.0 lb lean · 183 → 170 lb · Age 37

Male Fat Loss

Top 10 Fat Loss leaderboard — Male clients ranked by pounds of fat lost, measured by DEXA scan

#1 (30s) lost 31.0 lb of fat while gaining 5.5 lb lean over 203 days. #2 and #8 (both 40s) also gained lean mass while cutting. Timelines ranged from 89 to 400+ days — no single right pace.

What Fat Loss Looks Like on a DEXA Scan

Lost 30.2 lb of fat, gained 3.9 lb lean · 240 → 214 lb · Age 43

Male fat loss number 1 DEXA scan before at 240 lb and 30.9 percent body fat — Before: 240 lb · 30.9% BF

Male fat loss number 1 DEXA scan after at 214 lb and 20.6 percent body fat — After: 214 lb · 20.6% BF

Lost 27.9 lb of fat · 225 → 191 lb · Age 40

Male fat loss number 2 DEXA scan before at 225 lb — Before: 225 lb · 32.1% BF

Male fat loss number 2 DEXA scan after at 191 lb — After: 191 lb · 23.3% BF

Lost 23.7 lb of fat · 186 → 155 lb · Age 34

Male fat loss number 3 DEXA scan before at 186 lb and 25.4 percent body fat — Before: 186 lb · 25.4% BF

Male fat loss number 3 DEXA scan after at 155 lb and 15.2 percent body fat — After: 155 lb · 15.2% BF

Male Muscle Gain

Top 10 Muscle Gain leaderboard — Male clients ranked by pounds of lean mass gained, measured by DEXA scan

#1 (40s) added 14.6 lb lean while losing 9.7 lb fat in 112 days. #2 put up +13.0 lb lean / −12.1 lb fat in 47 days. #6 went the other way — a deliberate bulk, +10.2 lb lean over 256 days.

What Muscle Gain Looks Like on a DEXA Scan

Gained 21.7 lb lean · 158 → 184 lb · Age 31

Male muscle gain number 1 DEXA scan before at 158 lb and 23.6 percent body fat — Before: 158 lb · 23.6% BF

Male muscle gain number 1 DEXA scan after at 184 lb and 22.5 percent body fat — After: 184 lb · 22.5% BF

Gained 12.1 lb lean, lost 9.2 lb fat · 188 → 191 lb · Age 27

Male muscle gain number 2 DEXA scan before at 188 lb and 26.9 percent body fat — Before: 188 lb · 26.9% BF

Male muscle gain number 2 DEXA scan after at 191 lb and 21.6 percent body fat — After: 191 lb · 21.6% BF

Gained 9.2 lb lean, lost 6.6 lb fat · 173 → 176 lb · Age 33

Male muscle gain number 3 DEXA scan before at 173 lb — Before: 173 lb · 29.5% BF

Male muscle gain number 3 DEXA scan after at 176 lb — After: 176 lb · 25.3% BF

Female Muscle Gain

Top 10 Muscle Gain leaderboard — Female clients ranked by pounds of lean mass gained, measured by DEXA scan

#1 (30s) gained 12.0 lb lean while losing 24.9 lb fat in 128 days — scale only dropped ~13 lb. #7 (50s) gained 7.4 lb lean / lost 14.6 lb fat in 127 days. Every decade from the 20s to 50s is represented.

Worth noting: some of the best female transformations came from gaining weight, not losing it. One client went 140 → 152 lb and got leaner.6% → 26.1%). Another went 140 → 152 lb and got leaner. The scale says one thing. The scan says another.

What Muscle Gain Looks Like on a DEXA Scan

Gained 12.0 lb lean, lost 24.9 lb fat · 183 → 170 lb · Age 37

Female muscle gain number 2 DEXA scan before at 183 lb and 40.5 percent body fat — Before: 183 lb · 40.5% BF

Female muscle gain number 2 DEXA scan after at 170 lb and 28.9 percent body fat — After: 170 lb · 28.9% BF

Gained 10.0 lb lean · 140 → 152 lb · Age 23

Female muscle gain number 3 DEXA scan before at 140 lb and 29.3 percent body fat — Before: 140 lb · 29.3% BF

Female muscle gain number 3 DEXA scan after at 152 lb and 28.6 percent body fat — After: 152 lb · 28.6% BF

Client Spotlight: Eric’s Bulk

Eric (#6 on the male muscle gain board) gave us permission to share his transformation. 175 lb at 13.9% body fat → 211 lb in 256 days. Deep in a bulk and the scan proves it — 10.2 lb of new lean mass. He was chasing the 1000 lb club, focused on his main three lifts, and the DEXA tracked every pound of progress. Cut incoming.

“Tracking progress with real data can be a huge motivator. At the time, I was working toward becoming a 1000 lb club member, so I was focused on my main three lifts, and that approach led to surprisingly fast muscle gain. Seeing that reflected in my scans made the progress feel real and kept me motivated to keep pushing.”

— Eric

Eric before his bulk at 175 lb and 13.9 percent body fat — Before: 175 lb · 13.9% BF

Eric after his bulk at 211 lb with 10.2 lb of new lean mass gained — After: 211 lb · +10.2 lb lean mass

211 lb under the DEXA — red is muscle, gold is fat, blue is bone.

Eric DEXA body composition scan at 211 lb and 23.8 percent body fat showing muscle in red, fat in gold, and bone in blue

Eric’s DEXA scan at 211 lb · 23.8% BF

Client Spotlight: Esteban’s Cut

Esteban (#9 on the male fat loss board) gave us permission to share his transformation. He started his fitness journey at 309 lbs, dropped to 209 at his lowest, and used DEXA to track the final stretch. Over 5 months of scans: 248 lb at 23.9% body fat → 222 lb at 17.1% BF. That’s 21.3 lb of pure fat lost while preserving his lean mass. Visceral fat dropped from 536g to 352g.

“Before coming in and doing everything I started out at 309 lbs and my lowest I dropped to 209 lbs.”

— Esteban

Esteban before his fat loss transformation at 248 lb and 23.9 percent body fat — Before: 248 lb · 23.9% BF

Esteban after his fat loss transformation at 222 lb and 17.1 percent body fat — After: 222 lb · 17.1% BF

222 lb under the DEXA — red is muscle, gold is fat, blue is bone.

Esteban DEXA body composition scan at 222 lb and 17.1 percent body fat showing muscle in red fat in gold and bone in blue

Esteban’s DEXA scan at 222 lb · 17.1% BF

What the Data Tells Us

Recomposition is common — clients across all four boards lost fat and gained muscle simultaneously. Age isn’t a barrier — 40s and 50s show up on every leaderboard. The scale misses the story — some of the biggest changes here barely moved body weight.

Gaining weight can make you leaner. Multiple clients — especially women — put on 10, 20, even 29 lb and came out with equal or lower body fat percentage. The scale would say they’re going backwards. The scan says otherwise.

We’ll keep updating these boards as more data comes in. If you’re a client and want to see where you land, just ask us next time you’re in.

See how DEXA tracking drives fat loss results in The Role of DEXA Scans in Weight Loss.

Curious about fitness beyond body composition? See what high VO2 max really looks like across 646 clients.