Breakfast is the most important meal of the day, right?

Recently, USC took it one step further as it evaluated Vitamin D levels in its athletes and added a breakfast item for student-athletes that seems a bit out of the norm — Frosted Flakes.

According to The Wall Street Journal’s Rachel Bachman, more than one-third of the student-athlete population at USC had insufficient Vitamin D levels, which prompted the move to offer Frosted Flakes, a cereal that’s fortified with Vitamin D.

“After we put Frosted Flakes out, their vitamin D levels were much better,” USC sports nutrition director Becci Twombley told Bachman.

Bachman cited a study from the American Academy of Orthopaedic Surgeons that measured the Vitamin D levels in 223 NCAA student athletes.

“Our study demonstrated abnormal vitamin D levels in nearly one out of three elite NCAA Division I athletes tested,” USC administrative chief resident physician Diego Villacis wrote in the report. “Although there is much more work to be done, our results open the possibility for improved performance and most importantly decreased risk of injury with correction of vitamin D levels. This may potentially be achieved simply and safely through modification of diet, sunlight exposure, and vitamin D supplementation.”

And yes, for USC students that just means a bit more of that California sun and some extra Frosted Flakes at breakfast (they’re great!).