By the mid-1990s, the stress of the constant filming and promotion of his films, as Van Damme explains, led him to develop a cocaine habit, on which he spent up to $10,000 a week, and consuming up to 10 grams per day by 1996. He was arrested for driving under the influence    in 1999.  Attempts at drug rehabilitation were unsuccessful, and he resorted to resolve his addiction via quitting cold turkey and exercise.  In 1998, he was diagnosed with bipolar disorder .     In 2011, he discussed the condition on the British reality show Jean-Claude Van Damme: Behind Closed Doors , saying, "Sometimes you're gonna like me, and sometimes you're gonna hate me. But what can I do? I'm not perfect ... I'm an extreme bipolar, and I'm taking medication for this ... When I was young, I was suffering those swing moods . In the morning, the sky was blue [when I was] going to school, and to me, the sky was black. I was so sad." 
McTiernan and his crew, perhaps gritting their teeth by this point, decided to put Van Damme in the suit and see how it all looked on camera. Production photos show Jean-Claude being helped into his predator costume, its ungainly rubber shoulders slumping. In one picture, we see McTiernan pulling on one of the predator's red rubber arms with its pointy claws, smiling wanly. In another, the most amusing of the lot, Van Damme sits next to actor Carl Weathers. Weathers has on a prosthetic stump - required for the scene where his character has his arm violently blown off - and he's looking at Van Damme with an unreadable expression. Van Damme is staring at the horizon, apparently with a mixture of exhaustion and sheer disbelief.