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Evidence-based GLP-1 & peptide discussion since 2023
ForumsExercise & Body CompositionThrew up at the gym on injection day - lesson learned

Threw up at the gym on injection day - lesson learned

SteveThurs Thu, Apr 23, 2026 at 4:26 PM 28 replies 982 viewsPage 1 of 6
SteveThurs
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Apr 23, 2026 at 4:26 PM#1

I trained through the whole thing, three times a week, and the effect on the scale was almost nothing while the effect on everything else was large.

What would genuinely help is knowing what training is actually for during a large deficit, because framing it as calorie burn sets people up to quit when the arithmetic disappoints them.

I would rather have one careful answer than five confident ones.

24 19MaxMetOK, MounjBrad, nick_newbie and 21 others
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RetaRick_CA
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Apr 23, 2026 at 5:22 PM#2
SteveThurs said:
I trained through the whole thing, three times a week, and the effect on the scale was almost nothing while the effect on everything else was large.

Exercise transformation with training: went from barely able to walk a block to completing a 5K last month.

My fitness journey alongside GLP-1 therapy:

  • Month 1-2: Walking 15 min/day
  • Month 3-4: Walking 30-45 min, started bodyweight exercises
  • Month 5-6: Joined a gym, started resistance training
  • Month 7+: Running, lifting heavy, yoga for fun

The weight loss made movement possible. The movement made more weight loss possible. Virtuous cycle in action.

23 18AmyNC_wife, SkepticalSean, Dr.CardioMD and 20 others
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Dr.RheumBOS
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Apr 23, 2026 at 6:20 PM#3
RetaRick_CA said:
Exercise transformation with training: went from barely able to walk a block to completing a 5K last month.

Pet owner bonus of training: my dog is also losing weight because we're walking 2-3x more than before. His vet is thrilled. 🐕

We went from a 10-minute shuffle around the block to 45-minute walks through the neighborhood. He's more energetic, I'm more energetic, and we're both healthier.

Get a dog. Or borrow one. Walking a dog is the best low-impact exercise motivation that exists. They never let you skip a walk. 🐾

22 17cory_ATX, lori_vegas, Dr.PulmRoch and 19 others
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AussieAnna
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Apr 23, 2026 at 7:17 PM#4
SteveThurs said:
I trained through the whole thing, three times a week, and the effect on the scale was almost nothing while the effect on everything else was large.

Same pattern here, and in the same order. I had assumed I was the exception until I read this.

Last edited: Apr 23, 2026 at 8:17 PM
21 16bri_stats, pete_manc_UK, anna.melb_AU and 18 others
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sean_dublin
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Apr 24, 2026 at 12:46 AM#5

Clinical perspective, offered as context rather than as advice.

Gym confidence after training weight loss: walked into a gym for the first time in 12 years yesterday. Was terrified. But you know what? Nobody stared. Nobody judged. Everyone was focused on their own workout.

Started with 20 minutes on the treadmill and some machine-based resistance exercises. Nothing fancy. But I DID IT. And I'll go back tomorrow.

To anyone too intimidated to start: the hardest rep is walking through the door. Everything after that is just movement. 💪

20 15quinn_sf, NurseLeah_Nash, gary_naperville and 17 others
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