Sonya Walger of 'Lost' (Photo: Alberto E. Rodriguez/Getty Images)

It’s not easy being on ‘Lost.’ Sure, the ABC series has merited much critical acclaim during its soon-to-end six-year run, and the cast has gotten to call beautiful Hawaii home all this time.

‘Lost’ Stars Share Their 3-Word Reviews Of The Series Finale

But dramatizing trippy island secrets, making many a trek through rain-drenched and precarious jungles – sometimes while lugging around a cast mate – and facing off with the occasional polar bear can put an actor to the test.

On the occasion of ‘Lost’s series finale, airing Sunday starting at 9/8c, Fancast asked many of your favorite faces to name the scene that they remember as being the most difficult, arduous and/or challenging to get through.

Join In Fancast’s ‘Lost’ Live Chat Monday, May 24 At 3:30 PM ET

Who had to dangle upside-down a bit longer than desired? Who had to endure the ordeal of “childbirth”? Who shall never forget filming the Season 1 finale?

See what Jorge Garcia (Hurley), Harold Perrineau (Michael) and others had to share, in this view: