Scientists say your brain suddenly ages at 57, 70, and 78. Here are 5 ways to curb mental decline. NFL News: John Harbaugh confirms Lamar Jackson, Ravens will miss key weapon vs Mike Tomlin's Steelers ...

To induce sleep (a delta brainwave of 5 hertz), a person may need to devote at least 45 minutes, in a relaxed position, listening to calming music. Researchers at Stanford University have said that ...