I kept thinking: "but if he can't inhale or exhale air, how can he talk?" And: "why do his eyes work if he has no sense of touch?". And: "why does the skin not just wear off his feet?". And: if he can't feel anything, why does't he fall over when he tries to run?" and "with no blood circulation, what's the point of warning him not to get bruises? His whole lower body will be a bruise". In fact, basically: why doesn't he GO OFF?
All things that kind of bothered me about some vampire dramas, but there are usually less key to the plot.