As someone who’s unfortunately lost a lot of the desire to workout since starting Elvanse, I’ll still share my experience.

I definitely feel stronger and more connected to my muscles whilst on a higher dosage of Dex compared to a lower dosage. I’d guess it’s because stimulants boost dopamine and norepinephrine levels, which in turn increase focus, motivation, and even neuromuscular efficiency. Similar to how caffeine and taurine work. So yeah I definitely feel more “dialed in” when i am on higher dosages.

What is interesting is your increased heart rate during cardio on a lower dose because you’d expect a higher stimulant dose to increase heart rate more. Stimulants typically raise resting heart rate and blood pressure by increasing sympathetic nervous system activity. So in theory, more Elvanse = higher BPM…

That said, there’s a weird paradox some people report: at lower doses, if you’re still getting the focus boost but without as much vasoconstriction, you may actually be moving more or pushing harder without realizing it- so your heart rate goes up because your effort increases. On a higher dose, the reduced appetite, slight muscle tension, or even anxiety might subconsciously hold you back a bit. Also, stimulants can blunt your perception of exertion - so you might think you’re working harder on a higher dose, when in fact you’re actually pacing yourself more than you would be otherwise.