Also keep in mind the majority of my crossings were eastbound out of JFK. 6.5-7.5 flights...naps are supremely short since in most cases they aren't even legally required. That means low time 3 days, shorter naps, working more days per month. What Denny does is a lot more efficient and involves a lot longer naps. NYC ER you're switching your body clock more times per month and shorting yourself more full nights of sleep. But.....Malaga.