One of the hottest topics in business aviation is how to balance a day of flying with the need for much-needed rest. Dr. Steven Altchuler, from the aerospace medicine team at the Mayo Clinic, has several recommendations to help flight crews adjust to work hours that often extend beyond 9 a.m. to 5 p.m. For example, “Ideally you want to set your watch and you want your body to live on that watch time wherever the sun happens to be at any point in time,” he said.