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Evidence-based GLP-1 & peptide discussion since 2023
ForumsExercise & Body CompositionSwimming as primary cardio on GLP-1 — looking for input

Swimming as primary cardio on GLP-1 — looking for input

anna.melb_AU Sun, Mar 15, 2026 at 6:43 PM 38 replies 958 viewsPage 1 of 8
anna.melb_AU
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Melbourne, AU
Mar 15, 2026 at 6:43 PM#1

Training four times a week throughout and the scale has barely acknowledged it, which is demoralising in a way I did not expect.

So the question, as narrowly as I can put it: 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.

If the honest answer is that nobody knows, that is a useful answer and I would rather have it.

12 7DerekSJ_a1c, paige_pharma, emma_london and 9 others
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TrialTracker_MD
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Jan 2024
Maryland
Mar 15, 2026 at 6:50 PM#2
anna.melb_AU said:
Training four times a week throughout and the scale has barely acknowledged it, which is demoralising in a way I did not expect.

Exercise-induced nausea amplification with training: I learned the hard way that intense exercise within 12 hours of injection can make nausea much worse. The combination of delayed gastric emptying + exercise-induced blood flow redistribution is rough on the GI system.

My workaround: inject Friday evening, do low-intensity activity Saturday, and save my intense workouts for Tuesday-Thursday when the GI effects have subsided. Timing your training around your injection schedule is a real optimization strategy.

Last edited: Mar 15, 2026 at 11:50 PM
11 6stefan_berlin, Dr.EM_Chicago, pete_RVA and 8 others
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WendyG_ATL
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Georgia
Mar 15, 2026 at 6:57 PM#3
TrialTracker_MD said:
Exercise-induced nausea amplification with training: I learned the hard way that intense exercise within 12 hours of injection can make nausea much…

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. 🐾

10 5traveltech_sara, AttorneyGrant, DebRD_ATL and 7 others
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gary_naperville
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Naperville, IL
Mar 15, 2026 at 7:04 PM#4
anna.melb_AU said:
Training four times a week throughout and the scale has barely acknowledged it, which is demoralising in a way I did not expect.

This is my experience too, for whatever a second data point is worth.

9 4PharmHunterJen, TomTeleRx, DoseLogDan and 6 others
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Dr.EndoEP
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Oct 2024
El Paso, TX
Mar 15, 2026 at 7:39 PM#5

From the other side of the consultation, briefly.

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.

8 3LindaRN_retired, tommy_boulder, hyun_seoul and 5 others
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