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Reta and weight training

25 replies17 peopleJul 11, 2026β˜† Follow
Summary

How to restart weight training on retatrutide while in a calorie deficit after a long layoff

Forum users report that returning to lifting after a break on Reta feels unusually draining because of the deficit, leading to quick fatigue and strong DOMS. Most advise easing back with lower volume or intensity for the first weeks, adding carbs around sessions for fuel, and focusing on preserving muscle rather than chasing new strength gains. Hydration, rest-day movement, and patience are repeatedly mentioned as helpful. Several note that performance rebounds after two to three consistent weeks.

What this discussion establishesWhere people disagree

Some lean toward pushing through the initial discomfort to rebuild habit, while others stress going much slower than feels necessary to prevent setbacks.

Still open

Whether adding training will reliably restart weight loss that has stalled on Reta.

Nothing here is advice.

25 replies Β· 17 people
KeenFenwick72archiveopening postJul 11

Went back to the gym yesterday after a long time away. Started running again two weeks ago and that felt fine, so figured it was time to lift again. It's been over a year, almost two, since the last session, so I know rebuilding will take a while. The calorie deficit stood out right away. I went hard but was wiped out after roughly thirty minutes. My back is sore today from just three sets of ten on seated rows and lat pulldowns plus some lateral raises. Felt the burn and lactic acid build-up. Anyone else hit this when returning after a long break? Do I just push through carefully to avoid injury, or can diet tweaks help? Already eating plenty of protein, taking electrolytes, and drinking at least two liters of water daily. Open to small changes but don't want to slow weight loss. The gym I go to has a

WarmCompass27archiveJul 11

After that long without training it's normal to feel weak. The deficit plus restarting both play a part. Stick with consistent sessions for at least two weeks before changing anything big. The main suggestion right now is to raise daily carbs a bit or at least have more an hour or two before training. I also tire fast in a deficit, especially if sleep was poor the night before. Happens to everyone.

KeenFenwick72archiveJul 11
↳ replying to @WarmCompass27

Thanks. Out of habit I take a spoon of raw honey before heading out for the gym or a run. Trying to avoid pre-workout because the high caffeine and reta don't mix well.

WryHarbour43archiveJul 12

For most people, lifting in a big deficit on a GLP-1 means shifting your mindset. Building strength and muscle is very hard under those conditions. If you're a complete beginner you might see some quick gains, but otherwise the aim is mainly to hold onto muscle and keep your body from burning it instead of fat. That seems especially true when coming back after time off but not starting from zero. I've dropped 41 pounds in six months while lifting heavy the whole time. Definition looks better but my main lifts haven't added weight and some 1RM numbers even dropped a little. It's frustrating, yet I look more muscular from the fat loss, and I'm sure strength will come back once I'm at maintenance and can focus on recomp.

WarmCompass44archiveJul 12

There are two kinds of soreness. One is just muscles not used to the load anymore. The other feels like something is wrong or about to break, and you can tell the difference. If it's the first kind, keep going. That doesn't mean max effort every day, but the body needs to get used to tension again. Maybe stay lighter for a few sessions. Taking frequent breaks just teaches your body and mind to expect breaks, which often leads to quitting the weight-loss effort altogether.

SlowSparrow49archiveJul 12

When I restarted, I was sore for several days, real DOMS but not pain. Just kept going. The second week felt easier and my lifts went up. By the third week soreness was mild and I could double the workout length. On rest days I try to stay active with at least a two-mile walk to keep blood moving, which speeds up muscle repair.

BrightCompass57archiveJul 12
↳ replying to @KeenFenwick72 (opening post)

I'd drink more water. I take in a full liter during my own sessions of 21 sets plus an hour of cardio. Water won't make anyone gain fat, so increasing it makes sense. There is a learning curve getting back in. Be patient and add a little more each time.

BlueHarbour89archiveJul 12

Don't push too fast or hard after time away. Risk of fainting at the gym is real. Strength work on Reta is a long process, not quick. Begin with weights that let you hit around ten to twelve reps for three sets. Same idea with cardio: pick something like cycling, stairmaster, incline walking, elliptical, or swimming. Keep it challenging but not all-out because of the deficit, and not so easy you breeze through the target reps. Stay hydrated with plenty of water and electrolytes. Stay safe.

RustThistle27archiveJul 12
↳ replying to @KeenFenwick72 (opening post)

You're doing fine getting back into it. My first rule as someone new to lifting is avoid injury, especially since I'm older. If you need to lower reps per set or the weight, or both, that's smarter than getting hurt when you could have used five or ten pounds less. Is the extra weight worth being sidelined while you heal?

PatientCompass47archiveJul 12

I took my time returning to training and noticed steady improvement along the way. Lifting weights feels like a long endurance effort rather than a quick burst.

PatientMarble14archiveJul 12

It's expected after a long break. It will improve every week if you stay consistent.

KeenFenwick72archiveJul 13
↳ replying to @WryHarbour43

Not brand new to lifting. Used to train with a professional coach. Goal is to get a bit leaner while gaining functional strength for sports I used to do. Weight loss stalled after 7.5 kg on Reta and I've been at 87.5 for two weeks. Thought adding training might help since more muscle should burn more calories.

KeenFenwick72archiveJul 13
↳ replying to @PatientCompass47

I don't have much patience at all, sadly. πŸ˜’

ClearPebble66archiveJul 14
↳ replying to @KeenFenwick72 (opening post)

Someone coming out of a three-month coma often needs a very slow physical-therapy process to walk again. Muscles that haven't been worked much have atrophied, and ignoring what your body says can cause an injury that sets you back a lot. Go slower than you think you should, and in a few weeks you'll be able to train at a pace that feels more useful. Also eat carbs two to three hours before workouts. Protein is better for recovery than for fueling the session itself.

KeenFenwick72archiveJul 14
↳ replying to @ClearPebble66

Shoulders are still sore, back a little less. I do get some carbs but not a full meal's worth, maybe just a banana. That's exactly why the caloric deficit felt so strong.

GreenSignal63archiveJul 14

Just go at 60-70 percent effort for the first few weeks or you'll end up with terrible DOMS and struggle to sit or get out of bed. It comes back fast once muscle memory kicks in. After a break I like a simple full-body plan with compound lifts, starting light on the weights and adding a little each session. Easy to follow.

KeenFenwick72archiveJul 14
↳ replying to @GreenSignal63

Thanks, I'll check it out and give it a try. The weights look extremely low but I guess that's what happens after not training for so long.

GreenSignal63archiveJul 14
↳ replying to @KeenFenwick72

I'd usually start with whatever you can comfortably do for ten to twelve reps. Then add 2.5 kg each workout. It adds up quickly.

KeenFenwick72archiveJul 14
↳ replying to @GreenSignal63

Yeah I know. Used to have a strong deadlift so might start a little higher on that, but I'll see how it goes. Good place to begin for sure.

IronHarbour22archiveJul 15

What has worked after a break is starting with only two working sets on most presses and rows and just one on squats or deadlifts, skipping accessories. Sessions feel short at first, fifteen or twenty minutes. After several weeks move to three working sets on presses and pulls and two on squats and deadlifts, then add the third set later. This slow build keeps me from aggravating something, especially important in a calorie deficit. Hamstrings are sensitive so the gradual approach on lower-body lifts helps.

CopperFenwick10archiveJul 15

Reta took some stamina away for me. A few friends who run stopped because they were gassing out much sooner.

SlowCompass30archiveJul 17

Went to the gym yesterday after ten days on reta. Did shoulders and chest and failed on the fifth rep of my last bench set. Using three sets of eight at 15 kg below my old training weight. Never hit actual failure like that before, had to roll the bar off my chest. Embarrassing. Realized I've been in at least a 1000-calorie deficit with very low carbs the whole time. Going to try carb-loading with cream of rice before tomorrow's session and see if it helps.

KeenKettle50archiveJul 18

Big protein. And if you're reckless like me, anabolics. They make you eat more.

IronLantern48archiveJul 22
↳ replying to @SlowCompass30

Yeah, the calorie shortage combined with fewer carbs was likely responsible for that feeling. On this medication I stick to an average carb intake since it suits how my system operates best, and right before exercising I'll have some dates smeared with nut butter to boost my energy.

SlowCompass30archiveJul 29
↳ replying to @IronLantern48

Started carb-loading before lifting too. It works really well for me. Feeling stronger than ever.

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