Infection with the Lyme bacteria can cause this sort of internal vibration - a type of paresthesia (peripheral nerve sensation). When it's mild, you may first notice it at night when your body is quiet and still.
The supporting cast features James Caan as the young gambler, Charlene Holt, Ed Asner, Paul Fix, Arthur Hunnicutt, Michele Carey, and Christopher George. El Dorado was filmed on location in Tucson, Arizona and Kanab, Utah, and was shot in Technicolor. The paintings in the credits are by Olaf Wieghorst, who plays Swede Larsen in the film. The musical score was composed by Nelson Riddle.
The Cowboys (1972) Flickr/Cromely. John Wayne begged director Mark Rydell to give him the part of Wil Anderson in Cowboys.. Filming locations in New Mexico included sites in Chama, Galisteo, the San Cristobal Ranch in Lamy, and the Eaves Movie Ranch in Santa Fe.