I assume you’re talking about a red ey at the end of your flight. If so, wake up at normal time or slightly early. Get out and site see is applicable, get a work out in. Maybe have a beer at lunch assuming you comply with FARs and airline policy. Use towels, ironing board, extra pillows, etc to black out the curtains, get the room as cool as possible, and trick ******* your mind into thinking it’s evening. I shoot for a 6 hour nap. I don’t worry about it though, because worrying will cause you to stay awake. I’m definitely in the minority, I think most get a 1 hour nap or don’t even try.
leading red eye, ie first leg of the trip. I sleep in as much as possible. Commute in slightly early and get a crew room nap, or nap at home after dinner, if you live in base.