The FDA sent fitness wearable company Whoop a warning letter on Tuesday alleging the company's marketing its new blood pressure feature without proper approvals. A feature companies like Apple have been teasing for years now with the watch. Our Brandon Go is watching that story. Morning Brandon. Carl. Yeah, the FDA has concerns over the feature that launched in May. The crux of the debate intended use. Now, Whoop defends the BPI feature, saying it uses blood pressure information to simply offer performance ...