Is the testimony of a single witness sufficient to support a conviction?

"[U]nless the testimony is physically impossible or inherently improbable, testimony of a single witness is sufficient to support a conviction. [Citation.]" (People v. Young (2005) 34 Cal.4th 1149, 1181.) Moreover, a judgment may be upheld upon one witness's testimony "'even if it is contradicted by other evidence, inconsistent or false as to other portions. [Citations.]'" (People v. White (2014) 230 Cal.App.4th 305, 319, fn. 14.) In sum, we must uphold the judgment "'unless it appears "that upon no hypothesis whatever is there sufficient substantial evidence to support [the conviction]."' [Citation.]" (People v. Cravens (2012) 53 Cal.4th 500, 508.)