During the 1980s, scientists discovered a strain of bacteria that could survive the lethal environment of radioactive waste water. Radioactivity kills most forms of life including bacteria, by releasing cascades of free radicals.
A group of 90-year-old men and women who lifted weights for eight weeks nearly tripled the strength of their arms and legs! Under medical supervision, these aging people lifted weights three times a week. They were able to go from lifting about 15 pounds to lifting over 40.