Michael Jackson's dad yesterday blasted the grueling schedule of 50 concerts planned for his son, saying "no one" could have delivered that package. "I was worried about his health," Joe Jackson told ABC News. "I knew Michael couldn't do all those shows without some rests." Michael told him he only wanted to do 10 performances, Jackson said. The late singer's financial adviser insisted Jackson was physically incapable of performing the concerts, and that his weight had dropped to 110 pounds.