According to WPXI, Baughman was a normal, highly active 21-year-old.
Now, the Baughmans of Latrobe, Pa., are warning other parents and those with flu symptoms to take it seriously.
The official source of departure was organ failure as a result of septic shock from the flu, Kyler's family said. His mother told WPXI that her son was "into physical fitness" and that he was studying to be a personal trainer.
But days after Christmas, Kyler Baughman was worse - coughing and running a fever, his family told the news station.
"He kinda just laid down and went about his day and that was the day he was coughing and said his chest hurt, he had a mild cough", said his fiancée Olivia Marcanio.
He was taken to a Westmoreland County emergency room and then flown to UPMC Presbyterian in Pittsburgh.
Within 24 hours of arriving in Pittsburgh, Baughman died.
"I just think he ignored it and thought it'd go away like most people, and I think people need to pay more attention to their bodies", Baughman's mother told WPXI. Please keep his memory alive'.
According to his mother, he celebrated with more family members on Christmas night and returned to his job on December 26.
As of last week, Flu-related death rates were just under epidemic levels at 6.7 percent of all deaths in the US.
Simply put, this flu bug kills.
So far this season, more than 40,000 cases of the flu have been reported.
Baughman's mother confirmed that her son did not get a flu shot this season.
H3N2 is known for causing more severe flu symptoms and mutates more quickly than other strains, making it hard to predict and treat.
When they saw Kyler on Christmas he had a runny nose. However, in extreme cases it can be deadly.
Dr. Sanjay Gupta previously told CNN that most people who die from the flu have an "underlying illnesses or a weakened immune system".
Asthma, diabetes and heart disease patients also face an increased risk of death from the usually harmless virus. The CDC said flu activity in Pennsylvania is widespread in, meaning outbreaks occurring in at least half of the regions in the state.
It can lead to pneumonia - but could also trigger sepsis - when an infection such as blood poisoning sparks a violent immune response in which the body attacks its own organs.