Why Lifting Weights on a GLP-1 Isn't Optional — It's the Whole Second Half of the Plan
What I learned when I wasn’t working out in the gym — and why I'll never make that mistake again.
Why Lifting Weights on a GLP-1 Isn't Optional — It's the Whole Second Half of the Plan
The Part of GLP-1 Treatment Nobody Puts in the Pamphlet
When I started my medication, my doctor mentioned exercise 'would be important.' I was not phased to hear that as I was already working out regularly. No one warned me or told me that I would need to lift weights to keep strong. I actually had more “natural” muscle strength when I was heavier. The secret about that is you develop the muscles to carry the frame you have. If you’re heavy, you will need more muscle to get around. I didn’t really connect that to what I was going thru during a 20-pound section of weight loss. I was feeling great but not as strong. I looked at my arms, and they seemed pretty “skinny” and that’s not a word I use about myself. It seemed like I would automatically just get stronger, be able to do more and walk with ease again. I was wrong about that. It wasn’t quite easy or fast. Movement did come back but I had to work at balance and strength exercises in the gym to get that improvement. The consistent workouts made a great deal of difference.
I’m able to ride a recumbent bike and a bicycle again. Going up and down stairs is so much easier, and I don’t avoid stairs anymore. I needed to be stronger just to do things around the house and to be able to lift and carry heavy things. I knew I needed to get into the gym because walking and swimming or aquafit alone was not effective for strength building. I didn’t know the connection with strength and losing a great amount of weight. I needed to work to preserve the strength I had. I wish I’d known about that. I had to figure out that I needed to get into the gym and thought about it for months before I did go to the gym again. I knew I needed to get strong or I’d be kind of stuck. I’d lost weight, but I'd lost muscle along with it. That’s one of the biggest mistakes it seems. The GLP-1 suppressed my appetite so effectively that I wasn't eating enough protein and didn’t think about that. I wasn’t building new muscle, and I wasn’t getting stronger without the weight training. So, it did make sense and I did start working out regularly with a personal trainer for over a year and a half now. I am going in on my own as well but not as regularly as I need to. There’s always something to improve on for sure. But I feel great about what I am doing and the results I’m getting.
What Happens to Your Body When You Lose Weight Without Training
Your body doesn't distinguish between 'I want to lose fat' and 'I want to lose muscle.' Without a consistent signal that says, 'we need to keep this muscle because we're using it,' your body sheds lean tissue right alongside fat. After 50, this matters even more because we're already fighting age-related muscle loss at roughly 1–2% per year. Two sessions a week of resistance training changes the entire equation.
What I Did — Getting Back to the Weights After Years Off
Personal trainer started me back with machines, not free weights. My stability and confidence were both lower. Machines guided my movement and reduced injury risk while I rebuilt the neural connection to muscles.
Personal trainer focused me on compound movements. She had me doing squats, presses, rows, hinges, and carries hit more muscle in less time.
I made my appointment with my personal trainer early in the am every week for our scheduled session. I never missed any sessions. I ran late a few minutes, but I was never sick and never skipped a workout. That’s for a year and a half. That’s not my normal way of doing things -this is more consistent. This is necessary for me at this time and place in my weight loss experience. Time to pick up and use self-designed survival skills. Things I like doing and will keep up. After all this time I know I can work out on my own and don’t need a trainer. But I get some accountability and help with a trainer that isn’t the same on your own. Next step is to work out with a group of people to get that.
What I Wish I Tracked
A simple training log — exercise name, weight used, and reps. Tracking grip strength using a cheap dynamometer ($18 on Amazon), because grip strength is a legitimate proxy for whole-body strength and a predictor of long-term health outcomes after 50. I always figured I would bring my phone or a book and write all the workout info down. I didn’t get that far. My trainer kept good records and gave them to me, so I have some stats on my progress.
Instead of that training log, I made up a simple gym tracking app and put it in the Apple Store recently. The app can help to keep track of gym workouts, help to plan them and track progress thru the workouts and logs of them and more. I made up a quick tool that can help to gather info that helps you plan a workout and do it. I am already improving it for v2.
What I'd Tell a Friend Who's on a GLP-1 and Hasn't Started Lifting Yet
Start now — not when you feel stronger, not when you lose more weight first. You don't need to wait to start training. You get fit by consistently training. Two sessions a week, 30 minutes each, machines or bodyweight if you're brand new. Start slow and keep building and don’t overdo it and hurt yourself. Getting a trainer or joining a group exercise class focused on strength training or a Friday night lifting club that sort of thing could work to get that experience and fun.
The Beginner Strength Plan I Wish I'd Started With
Two sessions per week on non-consecutive days. Pick one exercise from each movement category per session. Do 3 sets of 10–12 reps with 60–90 seconds rest between sets. This takes 25–35 minutes. Do this for 8 weeks before changing anything.
🏋️ 8-Week Beginner Strength Plan for GLP-1 Users
Day A (lower + core focus): Leg press → Romanian deadlift → seated row → plank.
Day B (upper + core focus): Goblet squat → glute bridge → chest press → lat pulldown → dead bug.
Fuel before lifting: 20–30g protein within 1 hour before the session — especially important when appetite is suppressed.
Fuel after lifting: Another 20–30g protein within 1–2 hours after — this is when muscle repair begins.
Stay steady out there,
Alex — Steadyafter50.com