HIIT vs LISS cardio on GLP-1 — which preserves more muscle?

Dr.PulmRoch said:

There is also a quality change that the scan cannot see.

Bookmarking. The distinction being drawn above is the one nobody else makes. I will report back once I have actually tried it.

From the other side of the consultation, briefly.

Gym confidence after training weight loss: walked into a gym for the first time in 10 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. 💪

pete_nash said:

The intervention that works is boring and well evidenced: resistance training two to three times a week at a genuine effort, protein at 1.4 to 2.0…

Exercise transformation with training: went from barely able to walk a block to completing a half marathon last Saturday.

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, cycling for fun

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

mike.trainer_LA said:

Training does two things here and only one of them is on the scale.

Exercise-induced nausea amplification with training: I learned the hard way that intense exercise within 36 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.

Moderator note: leaving this open. It is being argued well and the disagreement is the useful part. Report rather than reply if it drifts again.