Los Angeles (CNN) -- Paramedics were called to Lindsay Lohan's Los Angeles hotel room when she did not wake up from a nap Friday morning, but the actress "is fine," her publicist said.

Lohan joked about the incident in a Twitter posting early Saturday:

"Note to self.. After working 85 hours in 4 days, and being up all night shooting, be very aware that you might pass out from exhaustion & 7 paramedics MIGHT show up @ your door.... Hopefully theyre cute. Otherwise it would be a real let down."

Lohan, 25, was simply sleeping after working "a grueling schedule the past few days," publicist Steve Honig said.