In the first three films, the actresses were subjected to horrible situations. They knew the scripts called for these predicaments and soldiered through them.
Raiders of the Lost Ark had Karen Allen immersed in a room with hundreds of snakes.
Temple of Doom had Kate Capshaw immersed in a room with hundreds of insects.
The Last Crusade had Alison Doody immersed in a room of thousands of rats.
Who was the bravest? Remember, this was all before CGI.