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Someone on an online forum said they’re two weeks into taking semaglutide (the drug in Ozempic and Wegovy) and now feel weaker and less energized during their early morning workouts. They wonder if the drug’s effect of slowing how quickly the stomach empties could be keeping a pre-workout snack, like a banana, stuck in the stomach so the body can’t use the carbs for fuel. They asked for tips and others’ experiences. Semaglutide is a man-made version of a natural hormone that helps control blood sugar and appetite. It tells the brain you’re full and it also slows how fast food leaves the stomach. That slowing is one reason people feel less hungry and often eat less. It’s used for treating type 2 diabetes and for weight loss under medical supervision. What the anecdote and small reports show is plausible but not proven in a rigorous way. Slowed stomach emptying can change how quickly carbohydrates reach the gut and get turned into usable blood sugar, so some people do notice changes in energy, bloating, or nausea, especially early in treatment. Most of the evidence here is personal reports and clinical knowledge about the drug’s effects, not a controlled study of morning-exercise performance. If there’s an actual drop in workout output, it could come from multiple things: lower calorie intake from eating less, sleep changes, or the timing of food relative to exercise — not just the banana sitting in the stomach. For someone who works out early, the practical takeaways are simple. Try adjusting what and when you eat: move the snack earlier, switch to a faster-digesting option (like a small glucose drink or a lighter carbohydrate), or experiment with working out a bit later if your schedule allows. Also watch overall calorie and protein intake so you aren’t short on fuel because you’re eating less overall. If you’re feeling faint, shaky, or unusually weak, slow down the exercise and check with your clinician — especially if you have diabetes or take other medications that affect blood sugar. Important caveats: this is about typical experiences, not medical advice. Semaglutide commonly causes nausea, reduced appetite, and slower gastric emptying, especially when people first start it. Those effects often improve over weeks, but they can persist for some people. Don’t change doses or stop medication without talking to your prescriber. If you have diabetes, heart disease, or other conditions, or if you’re on insulin or sulfonylureas (blood-sugar drugs), exercise and food timing can affect blood sugar in risky ways — get medical guidance. Finally, these comments come from individual reports and clinical knowledge, not a formal performance study, so results will vary. Bottom line: semaglutide can plausibly change how you feel during morning workouts by slowing stomach emptying and reducing appetite, so try adjusting snack timing or content and talk to your clinician if issues persist.
Source: r/Semaglutide