Sylvester Stallone has no regrets about injecting human growth hormone to prepare for his latest performance as Rambo. “HGH is nothing,” the actor told Time. “Everyone over 40 years old should investigate it, because it increases the quality of your life. Mark my words. In 10 years, it will be over-the-counter.” Stallone was fined $10,000 for bringing the legal substance into Australia without a permit last May.