On a GLP-1 in Rochester? Here Is the Half Nobody Set Up for You

Rochester is a medical town. That means we get the newest treatments before most places do, and right now that shows up in my gym as a very specific kind of person. Someone walks in already thirty pounds down, genuinely happy about it, and then tells me they feel weaker than they did a year ago.

They are not imagining it.

Here is the short version. If you are on a GLP-1 in Rochester, the medication does an excellent job with your appetite. It does nothing for your muscle. Protecting your muscle is a separate job, it takes resistance training two to three days a week plus enough protein, and nobody hands you that when they hand you the prescription.

One thing before we go further. This is education, not medical advice. I am a coach, not your doctor. Every decision about starting, stopping, or changing a medication belongs to you and the person who prescribed it.

Rochester has the prescribing covered

We are not short on medical expertise here. Mayo Clinic researchers recently studied 483 adults with obesity and found three distinct biological subtypes of the disease rather than one. About one in four participants turned out to produce lower levels of the natural hormones that create fullness after a meal, a subtype researchers describe as "hungry gut." Those patients lost an average of 21.5% of their body weight after six months on tirzepatide. Everyone else averaged 11.7%.

Read that again. Same drug, nearly double the result, depending on which version of the problem you actually have. That is the caliber of thinking happening a few miles from my front door, and it is good news if you live here.

But notice what that research is about. It is about matching the right medication to the right person. It says nothing about what happens to your body composition while the weight comes off. That part is still on you, and in my experience it is the part that goes unmanaged.

The number that should get your attention

Most people assume that losing weight makes you more active. Lighter body, easier movement, more exercise. It sounds obvious.

The data says otherwise.

Researchers presented a study at ENDO 2026, the Endocrine Society's annual meeting, that pulled Fitbit data from the All of Us Research Program and compared adults with obesity before and after they started a GLP-1. Of 1,950 patients prescribed the medication, 753 had enough wearable data to analyze. Daily steps fell from an average of 5,047 to 4,487. Moderate to vigorous activity dropped from 27.9 minutes a day to 22.2.

They moved less. About 560 fewer steps a day, and roughly a fifth less hard activity, after starting the drug.

Dr. Sajana Maharjan, who led the work, made the point that people tend to assume weight loss naturally produces more movement, and that this study suggests the opposite. Her conclusion was that exercise cannot be treated as optional for anyone on these medications.

This is the first large study to look at wearable data in this population, so treat it as a strong signal rather than a settled fact. But it matches what I see. When appetite goes quiet, energy often goes quiet with it, and the workout is the first thing that disappears.

What the scale is not telling you

Here is why that matters more on a GLP-1 than on a regular diet.

When you lose weight, you never lose only fat. You lose a mix. Across the published trials, lean body mass has accounted for roughly 25% to 39% of the total weight lost on these medications. In the semaglutide substudy of STEP-1 it was around 40%. In the tirzepatide substudy of SURMOUNT-1 it was closer to 25%.

Put a number on it. If you are down forty pounds and a third of that was lean mass, you have given away more than thirteen pounds of muscle and connective tissue. The scale calls that a win. Your body calls it something else. Muscle is what carries you up stairs, what keeps you upright when you catch an edge on the ice in February, and what burns calories while you sit still. Give away enough of it and you have built the exact conditions for the weight to return, which I covered in detail in what happens when you come off a GLP-1.

I have written before about the muscle problem nobody warns you about and about the daily habits that decide your results. This one is about where in Rochester you actually go to do something about it.

What actually protects it

The good news is that this is one of the more solved problems in the field. It is not mysterious. It is work that somebody has to organize for you.

A systematic review found that resistance training two to three times a week during GLP-1 therapy cut fat-free mass loss by 30% to 50% compared with people who did not train, and it did that without slowing fat loss at all. You keep the muscle and you still lose the fat. Current 2026 guidance pairs that with protein at roughly 1.2 to 1.6 grams per kilogram of body weight per day, spread evenly across meals rather than stacked at dinner.

Here is what that looks like in practice:

• Lift two to three days a week. Real resistance training with progression, not a machine circuit you never make harder. This is the highest-leverage item on the list by a wide margin.
• Hit your protein floor every day. For most people that lands somewhere between 100 and 150 grams. When you are eating far less food than you used to, this takes deliberate planning. I broke down what a serving actually looks like in protein math.
• Spread it out. Roughly 30 grams at each meal beats 15 at breakfast and 70 at dinner.
• Protect your steps. Knowing about that 560-step drop is most of the battle. Watch the number so it cannot slide without you noticing.
• Measure something other than the scale. A body composition scan tells you whether the pounds leaving are the ones you wanted gone. The scale cannot tell you that, and by the time you feel the difference the tissue is already gone.

Where to do this in Rochester

This is the genuinely thin part. Rochester is full of places to get the prescription. It is a lot shorter on places set up to handle the other half.

We are at 4921 W Frontage Rd N, about five minutes from the Mayo campus, and we have been coaching people here since 2014. What matters for this specific situation:

Coached lifting, not a room full of machines. Our BUILT track is designed for exactly this person. Adults who want to get stronger without getting hurt, with progression handled for them so the load actually climbs over time. You are not left to guess.

Someone watching your numbers. Our Transformation program is strength-first and protein-first, with body composition scans, so you can see whether you are losing fat or losing yourself. That is the entire point of it.

One on one if you want it. If you are managing side effects, low energy days, or you have never touched a barbell, personal training means someone builds the plan around your week instead of the other way around.

Class times that fit a Rochester schedule. We run seven days a week. The schedule is built around people who work.

Your first class is free. Come see the room, do a session, and decide from there.

FAQ

Should I lift weights while I am on a GLP-1?

Almost certainly yes, and the research here is unusually clear. Resistance training two to three days a week has been shown to reduce fat-free mass loss by 30% to 50% during GLP-1 therapy without slowing fat loss. Talk to your prescriber about your own situation, particularly if you are dealing with side effects, but the general direction is not controversial.

How much protein should I eat on a GLP-1?

Current guidance sits around 1.2 to 1.6 grams per kilogram of body weight per day, spread across your meals. The hard part is not the target, it is hitting it when the medication has removed your appetite. That usually means planning protein first and treating it as non-negotiable instead of waiting to feel hungry.

Will exercise make the medication work less well?

No. The concern runs the other direction. The evidence shows people tend to move less after starting these drugs, not more, and that drop is a problem for muscle and for long-term maintenance. Training alongside the medication protects what you want to keep while the drug does its work on appetite.

Do I need a special gym for this?

You need three things. Resistance training you actually progress, someone who knows what to watch for, and a way to measure body composition instead of just weight. Any gym that gives you those will do the job. Most people find that a coached program gets them there faster than a membership and good intentions.

Ready to start

If you are on a GLP-1 and you have been waiting for somebody to tell you what the other half of the plan is, this is it. Lift two to three days a week, eat your protein, and measure something better than a scale.

We are five minutes from Mayo and your first class is free. Come try one and we will show you what protecting your muscle actually looks like.