"Trust me, you can still outrun me," Sam teased him. As a human, anyway; he could probably come a lot closer as a wolf. And it was irrelevant, anyway - unless the serum prevented it somehow, Steve would be a werewolf, too. Probably some kind of super-werewolf or something.

"Pretty decent." Sam shrugged. "It's, uh, heightened closer to the full moon. And obviously not as good as when I'm a wolf." He shifted awkwardly. He hadn't kept it a secret from Steve for any malicious reason, but because he just didn't know how he'd react, or if he'd even believe him. Of course, now he'd definitely been given enough proof.