Well, if you're talking about unusual resilience, I've been beaten up countless times but never had more than bruises (despite my mom's refusal to let me drink milk as a child!--thank goodness she fed us plenty of broccoli and greens)... Also, during the last four years I've had one cold--which lasted two days--and no other infectious illnesses. I don't have allergies and my digestive system is fine.
Unfortunately, I'm typically clumsy and overweight, and prone to BPV (benign positional vertigo... which makes me even more clumsy, and whose origin the doctors still can't figure out)... so Wolverine prototype? Nah. Good immune system and strong bones? Yep.
No physical differences are big enough to differentiate me from NTs, though. They're purely mental differences, for me. I have a Persian body and a Siamese mind...