Texas Chain Saw Massacre has been considered as of the most horrific films ever made, so probably wasn’t a walk in the park to act in. Marilyn Burns endured a lot of trauma at the hands of the notorious director, Tobe Hooper. In one scene he even cut her finger open to evoke real pain.
According to what she told Terror Trap, the actress said was “a surrealistic and became so frightening because I had to be tied up and screaming for so long,” “Afterwards, I was just so grateful it was over. I probably was the happiest girl alive.”
Zac Efron – Killing Zac Efron
Zac Efron has certainly come a long way since "High School Musical." In the middle of the production of his reality TV show "Killing Zac Efron", the actor fell violently ill while on set in Papua New Guinea. The "Neighbors" star had to be transported via helicopter to Australia to be treated.
It is said that the actor suffered from a bacterial infection that may have been typhoid. Efron, however, recovered quickly after 3 weeks in medical care By Christmas Eve he was already home in L.A.
Heather Donahue – The Blair Witch Project
The whole cast from "The Blair Witch Project" suffered a great deal of trauma while filming the horror flick. When the director sent these kids into the woods, the poor actors didn't really know what they were in for. They were taunted and terrified throughout the duration of the shooting.
Heather Donahue especially had a hard time as she had to pretend that the whole experience was real which even involved faking her own death.
Kyle Richards – Halloween
Kyle Richards' career goes further back than "The Real Housewives of Beverly Hills." At just nine years old, she starred in the horror film "Halloween." The actress had no real idea about what she is acting in at the time.
When she saw the movie for the first time, the actress expressed how it was the first time she pieced it together." The actress even said that she had to sleep with her mom until she was a teen. She must have been really terrified.
Mathew McConaughey – Dallas Buyers Club
Mathew McConaughey had to go through a major physical transformation for this role. The actor lost about 50 pounds to play AIDS victim Ron Woodroof in "Dallas Buyers Club."
The "Interstellar" actor had a hard time recovering after that role, saying that at times he would even lose his eyesight, or his legs would lock up after a short run around the block.