Practical as it may be, that's not a natural right but merely a physical possibility. More generally, the concept of natural rights - except for a very narrow niche of special subjects closely centered on the individual's own life and bodily autonomy - is a shortcut to total subjectivity at best. And even for that very narrow niche, the "rights" part is a normative civilizational convention/construct, whereas nature conspicuously ignores such "rights" (as do humans for the most part when it comes to other species)