The cations with high positive charge and small ionic radii are suitable to forming hard glasses, and those with low oxidation state and large radii are suitable to forming soft glasses.

At 50, he has a paunch, soft blue eyes, a brownish-blond mustache, and mildly thinning hair of the same color. He resembles a younger Wilford Brimley minus the glasses.

Constipation. Drinking six to eight glasses of water a day can help prevent constipation by keeping stools soft, says Dr. Minkin.