For example, since according to relativity there is no preferred reference frame, to a neutrino moving at 99% c towards me, it could look like I am actually moving at 99% c towards it. But in the latter reference frame, I'm an object dozens of orders of magnitude more massive than the neutrino moving near the speed of light, so I should have an absolutely absurd amount of kinetic energy. Now imagine I bump into another person, or even just move through air particles; at such a speed, the resulting collision should be equivalent to detonating several nuclear weapons. Basically, the question becomes, doesn't the fact that we are not constantly exploding all the time imply that there is a preferred frame of reference, in this case the one in which the neutrino is moving at relativistic speed and I am not?