"I heal faster than an ordinary human. I'm tougher, too. And I'm stronger and faster, although I'm not exactly in your league." And in all the time they'd spent working out and jogging together, Sam had been holding back to what a normal human could do, so nobody would suspect. "I can smell better."

"Nah, nobody else knows." Maybe Fury; he didn't know what SHIELD knew about him, but he'd always taken care to keep it secret. Sam gave Steve a small smile when he squeezed his hand. At least he wasn't pulling away from him. (Yet, anyway.)