Bears coach Lovie Smith turns down endorsement opportunities.
But he couldn't think of any reason to pass when NyQuil and DayQuil came calling.
"For me, I don't do a lot," Smith said. "But it's easy because it's a product that I use.
"They approached us, with their theme about, "There are no sick days for an NFL coach.' As a coach, you don't miss for any reason, so you need something to help you go to work."
Smith and his son Matt, who helped finalize the deal, traveled to Vancouver in May to shoot the commercial.
"I just loved doing the commercial," he said. "We had a blast."
A man of few words, Smith doesn't utter a single word in the commercial, although there are scenes of him on the sideline and in front of a white board, talking to his players. The best part, though, is him snoring and sleeping, in his Bears pajamas, with NyQuil on his nightstand.
Smith recalled how NyQuil was a part of his life growing up in Texas.
"They didn't have a Day Quil," he said. "The green cups. Yes. Vivid [memories]."
Interestingly, Smith said he started to feel sick right after his commercial shoot, heading to a pharmacy to get some.
Other than funerals, Smith hasn't missed any work days during his NFL coaching career.
He said prevention is a key, which is why he works out regularly, consumes vitamins and eats healthy.
"This was a name brand, national company," Smith said. "We're getting ready to go to London this week, and we're going over there to spread the Chicago Bears brand."
Here is Smith's Nyquil/ Dayquil commercial.
On an aside, NyQuil/ DayQuil is looking for the most dedicated fan. To enter, fans should visit the Facebook page (click here) and submit a photo, with a personalized rally cry that shows why they are the Most Dedicated Fan.