Warrick Page/Max Tracy Ifeachor, who plays Dr. Heather Collins on 'The Pitt, tells PEOPLE in an exclusive interview that her character's red fleece jacket was added during production Ifeachor shares that the set was "absolutely freezing" She says that between takes on the hit HBO Max medical drama, she would have hot water bottles pressed against her body to stay warm Tracy Ifeachor likes to be warm. The actress, who plays Dr. Heather Collins onThe Pitt, tells PEOPLE in an exclusive interview that her character's red fleece jacket she wears throughout the season was added during production. A special someone on set noticed she was cold and asked the costume team to help. "The stages we filmed on are absolutely freezing," Ifeachor shares. "One day we could see our breath." The actress explains that she does not enjoy being cold, saying, "My house is a sauna everywhere I go. I'm sorry, green people. I try my best, but I need heat." Warrick Page/Max Never miss a story — sign up forPEOPLE's free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human-interest stories. Ifeachor adds that between takes on the hit HBO Max medical drama, she would have multiple hot water bottles against her body to keep warm. "When we were just starting out, John [Wells, executive producer] took one look at me, and then the costume lady came over to me and she goes, 'I've got these six fleeces. John says you look cold,' " she says. "So that's how Collins came to wear the red chunky fleece." Given that the show follows a group of healthcare workers during one 15-hour shift at an emergency room in Pittsburgh, the fleece has now become a signature look for her character. And for a good reason, as Ifeachor recalls having "goosebumps up my arm" while filming. She went on to say that the gesture was "so nice." Later during production, she met theAbbott Elementaryteam, as they filmed at the same studio, and said they corroborated her experience. "We would always meet and talk, and they were like, 'No, [the stages are] all like that. They're all freezing,' " she says. "I had about four hot water bottles that the [assistant directors] run and fill for me. They're so kind." The actress kept mum about other things that happened between scenes, telling PEOPLE, "What happens on set stays on set." However, she also revealed thatshe lost her wedding ring on set. Warrick Page/Max The PEOPLE Appis now available in the Apple App Store! Download it now for the most binge-worthy celeb content, exclusive video clips, astrology updates and more! "I didn't know what happened," Ifeachor says of the incident. "It was in my room and then it just disappeared." Upset over losing her sentimental ring, the actress sought comfort from her costarNoah Wyle, who plays senior attending physician Dr. Michael "Robby" Robinavitch. "I remember going up to Noah [Wyle]," Ifeachor remembers. "I put my head on his shoulder, and I said, 'Am I still married?' " Wyle's response, according to the actress, was a simple, "Yeah." The actress' wedding ring never resurfaced on the busy set as they wrapped, but she is "still hopeful" that she will be reunited with her special jewelry when the show enters production for season 2. "But yeah, I can say, there's blood, sweat and tears, and a wedding ring that went into season 1," Ifeachor jokes. "I'm so glad that [the show] received the reception that it has, because it really deserves it." The Pittis currently streaming on HBO Max. Read the original article onPeople