"Y'know I'm not going to hurt you," Bruce said softly, reaching out for you to place your hand in his. He needed to take a few blood tests to make sure you weren't carrying anything deadly from how many countries you'd been to in your time in HYDRA. Even Bucky hadn't seemed so... jumpy when it came to lab equipment. "l promise I'm here to help you, whether you want to believe it or not.” He took out the needle and eyed you, waiting for you to react poorly, "Alright, deep breaths. Deep, keep yourself calm. It's going to hurt." The needle pressed into your skin and he flinched as your fists clenched at your side. "Deep breaths!" Very slowly he started extracting the blood. For the sake of keeping you calm he pulled out a handful of candy from his pocket, "Do you have a sweet tooth by any chance?" Bruce popped one of the chocolates in his mouth and held them out to you. "It uh... helps with the stress y'know? The one thing I think Tony's right about is that snacking is a good cure for anxiety." He almost had enough blood for this whole thing to be over you just needed to keep calm a little longer.