Ozzy Osbourne admits he feels stronger and healthier than he has done in years.<br /><br /><br /><br />The 69-year-old rocker has battled drink and drug addiction in the past but he's been sober for five years and is taking care of his body by exercising regularly.<br /><br /><br /><br />Discussing his upcoming 70th birthday in December, he said: "It's only a number and I don't know how a 70-year-old person is supposed to act but I feel better at 70 than I did at 50.<br /><br /><br /><br />At the height of his wild partying, the 'Paranoid' singer was convinced he'd be dead before the age of 40 - but once he neared that milestone, he was determined to live longer.<br /><br />