This basic decision, if we can call it that, defines the most central core of a human being. (religion-online.org)
The last station is designed to stress you when you're at your weakest by doing central core movements when you are exhausted from doing the previous 4 stations. (anabolicsmall.com)
To balance their speeds out to those distances from their massive central cores, the galaxies must be made of more stuff than just that which we can detect. (public.nrao.edu)