You started semaglutide three months ago. The appetite suppression is real — you're eating significantly less than you used to without much effort. You're losing weight. Your doctor is pleased. You're using a fitness app to support the process.
The fitness app has no idea you're on semaglutide. It doesn't know you're on any medication. It set your protein target at 0.8 grams per kilogram of bodyweight — the standard recommendation for a sedentary adult — because that's what it gives everyone at your stats. It recommended a 45-minute cardio session for Tuesday, the same day you inject. You felt nauseated the whole time and nearly stopped in the middle.
The app has no mechanism for knowing that these things are related. It's generating generic recommendations for a generic person, and you are not a generic person.
Millions of People, Zero Purpose-Built Support
An estimated 28 million Americans are using GLP-1 receptor agonists — semaglutide, tirzepatide, liraglutide, and related medications — primarily for weight management and type 2 diabetes. That number is growing rapidly. The medications work. And virtually none of the major fitness apps have built any GLP-1-specific guidance into their coaching frameworks.
This is a significant gap. GLP-1 use changes the exercise and nutrition picture in ways that generic recommendations actively fail to address.
Why Standard Recommendations Miss the Mark
Protein targets are wrong.The standard protein recommendation — 0.8-1.2 grams per kilogram of bodyweight — is appropriate for people losing weight in a normal caloric deficit. GLP-1 users typically experience more aggressive appetite suppression, which means they're often eating less total food than apps recommend. When total intake drops significantly, protein needs to be prioritized more aggressively to protect muscle mass.
Research on caloric restriction and muscle preservation consistently shows that protein requirements increase as caloric intake decreases. A 2020 review by Stokes et al. in Nutrients recommended protein targets of 1.4-1.6 grams per kilogram for individuals on significant caloric restriction who engage in resistance training — substantially above generic app defaults. For GLP-1 users who are often in deeper effective deficits than they realize, preserving lean mass without explicit protein prioritization is difficult.
Injection day exercise scheduling matters.Nausea is the most common side effect of GLP-1 medications, and it's often most pronounced in the 24-48 hours following injection. Scheduling high-intensity cardio sessions or intense metabolic conditioning on injection day is a reliable path to a miserable workout — and miserable workouts undermine adherence more than almost any other factor.
Your coach should know your injection day and plan accordingly. Lower-intensity movement, mobility work, or rest is the correct prescription for injection day for most GLP-1 users during dose escalation. That's not a workaround. That's good coaching.
Nausea-prone exercise awareness.Certain exercise modalities exacerbate GLP-1-related nausea: high-intensity intervals, particularly running-based cardio, and exercises that involve significant trunk compression. A coach that knows you're on semaglutide steers you toward lower-GI-stress alternatives on sensitive days — cycling over running, upper-body work over heavy deadlifts — without requiring you to explain the nausea every time.
Cessation planning is critical. This is the piece almost nobody discusses: a 2022 study published in Diabetes, Obesity and Metabolism found that 67% of participants who discontinued semaglutide regained approximately two-thirds of their lost weight within one year. The medication suppresses appetite. When the medication stops, the appetite returns — but the habits, muscle mass, and metabolic foundation to sustain the loss may not be there.
Your fitness coach should be building that foundation while you're on the medication, so the cessation period doesn't become a rebound. That means progressive resistance training to protect and build muscle mass, sustainable eating habits that don't rely entirely on pharmaceutical appetite suppression, and an explicit conversation about what happens when and if you stop the medication.
What Medication-Aware Coaching Actually Looks Like
Here's a BBA coaching conversation at intake for a GLP-1 user:
"You mentioned you're on tirzepatide. A few things I want to account for in your program. First, your protein target is going to be higher than standard recommendations — I'm setting it at 1.5 grams per kilogram of bodyweight to protect muscle as we go through this. Second, I need to know your injection day so I can schedule your harder sessions away from it. Third, I want to make sure we're building resistance training into your program — not just for fitness, but specifically because the research on GLP-1 cessation is clear that the people who keep more of their weight loss long-term are the ones who built lean mass while on the medication. Can you tell me which day you inject?"
That's what the conversation looks like when the coach actually knows about the medication.
The Integration That Should Exist
Fitness apps treat medication as someone else's problem. Your doctor manages the prescription; the app manages the workouts. The idea that these two things might need to be integrated — that what you take affects how you should train and eat — doesn't fit the app's product architecture.
BBA's medication-aware framework stores your medications in your profile and applies them to every coaching decision. The protein target adjusts. The schedule accounts for injection timing. The long-term program explicitly addresses the cessation transition. And if your medication changes, you tell the coach and the whole framework updates.
You're not a generic weight-loss user. You're a GLP-1 user with specific needs that are different from the default — and your coach should know that difference.
Your medication. Your coach. Actually integrated.