According to a new study by researchers at the University of Iowa, the key to staying strong in old age may be eating some apple peels. Scientists think a compound found in green tomatoes and apple peels may keep you strong throughout your golden years. The scientists recently discovered a protein in your body called ATF Four, which is responsible for breaking down muscle mass and strength. They took previous research about the compounds and applied it to the ATF Four. They found that the naturally occurring substance reduced the proteins detrimental effects. Research shows that just eating apples and green tomatoes is no substitute for exercise and proper nutrition…But if you’re looking to keep the strength you have, it might be worthwhile to add them to your diet.