Strength Training for Weight Loss: What to Know on a GLP-1 Journey

Weight loss — whatever drives it — often includes some loss of lean muscle mass alongside fat. Muscle tissue plays a key role in how the body burns energy at rest, so protecting it tends to support longer-term progress and how you feel day to day. Resistance training, whether with weights, kettlebells, resistance bands, or bodyweight exercises, sends a signal to the body to hold on to that muscle even while in a calorie deficit.

Different types of training, different roles

There is no single best training method for everyone — individual fitness level, joint health, and preference all shape what works. That said, some broad patterns are worth knowing:

• Resistance training (gym, free weights, kettlebell training): Directly challenges muscle tissue, making it the most evidence-aligned approach for preserving lean mass during weight loss. Compound movements — squats, rows, presses — tend to engage the most muscle groups at once.
• Cardio (including treadmill training): Supports cardiovascular health and contributes to overall energy expenditure, but on its own does less to protect muscle mass compared to resistance work. Many people find a combination most sustainable.
• Kettlebell training: Blends strength and cardio elements, making it a time-efficient option. It can be a good entry point for people who find traditional gym training daunting.

Listening to your body on GLP-1 medicine

Appetite changes can mean eating less than before, which affects energy for training. Many people find that focusing on the bigger picture of their weight-loss journey — not just the number on the scale — helps them stay motivated through lower-energy days. Starting with lower intensity and building gradually is a sensible approach; your prescriber or doctor can advise on what is appropriate for your individual situation.

If you want to explore how cardiovascular exercise fits alongside strength work, our overview of cardio options for weight loss covers the main approaches. For a deeper look at structured gym-based programmes, see our guide to weight training for weight loss.

Seeing how your effort translates into results — and understanding why the scale sometimes moves in unexpected ways — is where consistent tracking makes a real difference. GLP Trackr's weight and body tracking feature lets you log not just your weight but measurements and weekly progress, so you can see changes in body composition that a single number often misses. This matters especially with resistance training, where muscle building can offset fat loss on the scale while your body is genuinely changing.

The daily check-in takes about thirty seconds and captures energy levels, mood, sleep, and water alongside weight — giving you a fuller picture of how training days compare to rest days over time. The insights and correlation tools can surface patterns from your own data, such as whether your energy or progress tracks alongside your protein intake or sleep quality.

GLP Trackr also helps you stay honest about nutrition. Since protein intake is particularly important when combining resistance training with a GLP-1 medicine, having an easy way to log meals — including a quick photo scan — keeps that target visible without adding friction on days when appetite is low.

You might also find it useful to explore other approaches people use alongside their treatment to support their mindset and consistency.

GLP Trackr is a tracking app — it is not a substitute for advice from your prescriber or doctor. If you have any concerns about exercising while on your medication, or if you experience dizziness, fatigue, or other symptoms during training, speak with your healthcare professional.

Track your weight, measurements, energy and progress all in one place — download GLP Trackr free on the App Store or Google Play and start your 7-day trial today.