Robin Williams

Robin Williams

Robin Williams has had to pull out of scheduled performances because of health problems.

The Oscar-winning funnyman is currently at a Miami hospital with heart issues, the Miami Herald first reported.

Williams, 57, who has been hitting 80 cities with his "Weapons of Self Destruction" one-man show tour since September, has canceled all four of his performances in Florida.

According to LA Times' the Dish Rag, doctors had evaluated the comedian and recommended he take off a week to rest. He's reportedly in the ICU.

Williams has been pushing himself lately, playing in 11 cities over the past three weeks. He's scheduled to take the stage again Monday, March 9 in Jacksonville, Fla.

Williams next reprises his role as the mannequin version of Teddy Roosevelt that magically comes to life in "Night at the Museum: Battle of the Smithsonian," which hits theaters nationwide in May.