Don Saladino is a celebrity personal trainer based in New York.Courtesy of Don SaladinoDon Saladino, a personal trainer to celebrities, said he's in the best shape of his life at 47.Saladino strives to challenge himself continually and build muscle. His training regime includes strength and interval training, and hockey.At age 47, the personal trainer Don Saladino is in the best shape of his life."Is my body composition better now than it was when I was in my 20s?