Charles Arthur Salvador, better known as Charles Bronson, has served nearly 50 ... ups,' he claims in his genuinely must-read book, Solitary Fitness (seriously, read this book and thank us later).

Charles Arthur Salvador, better known as Charles Bronson, has served nearly 50 years in prison ... ups and the sit-ups,' he claims in his genuinely must-read book, Solitary Fitness (seriously, read ...