With Thanksgiving upon us and even more winter holidays just on the horizon, this week officially kicks off the busiest month of the year for U.S. travelers. And if you’re one of the many people who will be boarding a flight, you may want to take some advice from a physician who has spent years keeping the world’s top athletes healthy.

Dr. Jonathan Finnoff is the chief medical officer of the U.S. Olympic and Paralympic Committee, setting and implementing the organization’s strategic direction for promoting the physical and mental health of Team USA athletes both on and off the field of play. He was named Most Valuable Section Editor by Current Sports Medicine Reports, the medical journal from the American College of Sports Medicine, in 2019. He’s served as medical director for the Mayo Clinic Sports Medicine Center in Minneapolis, worked as a team physician for the NBA’s Minnesota Timberwolves and WNBA’s Lynx, and has accompanied Team USA to multiple Olympic Games. He also happens to be an athlete himself—an accomplished mountain biker.

In an interview with The Wall Street Journal published earlier this month, and an accompanying TikTok video posted Monday, Finnoff shared four key ways to ensure you don’t catch something nasty during your flight.