Sinbad was born November 10, 1956, in Benton Harbor, Michigan, the son of Louise and the Baptist Rev. Dr. Donald Beckley Adkins.[2][3][4] He has five siblings: Donna, Dorothea, Mark, Michael, and Donald.[5] Sinbad attended Benton Harbor High School, graduating in 1974.[6] He attended college from 1974 to 1978 at the University of Denver in Denver, Colorado, where he lettered two seasons for the basketball team.
Sinbad served in the United States Air Force as a boom operator aboard KC-135 Stra
