Exercise influences blood pressure through various physiological mechanisms, and the idea that all exercise effects are placebo is likely an oversimplification.

“she actually set out in her thesis at Harvard um to study the effects of exercise and her advisor said to her I think all the effects of exercise are Placebo and it was kind of a it was a it was a prompt to go actually look at that and she thought well that's crazy Ali's a former D1 athlete she's also trained clinical psychologist runs a lab at Stanford she's one of these superhumans but she said well that's crazy no exercise changes blood pressure by way of a number of different physiological mechanisms but”