"When I picked up the script I weighed about 180 pounds. That's my plain weight," Morgan told ET. "Now I weigh about 150. I don't think I can lose any more weight at this point and still get up on my horse."
The eight-part television event focuses on the rise of the Texas Rangers during the Texas Revolution against Mexico. The cast includes Brendan Fraser, Ray Liotta, Olivier Martinez and Bill Paxton as Sam Houston, president of the Texas Republic.
In the midst of all the macho posturing and shootouts, there's still a little something for the ladies in the series. 90210 star Trevor Donovan promises romance as well.
"There may be a little extra skin being shown," Donovan said. "A little bit of frolicking in the river, and some intimate moments between me and Molly McMichael, who plays my love interest Rebecca Pit."