Preparing your schedule so you're not driving exhausted.
If a significant drive is planned for day one or two of a trip, consider a lighter arrival day instead, giving your body clock time to catch up first. Caffeine timing matters more than the total amount — using it strategically in the first few hours after waking helps more than spacing it throughout the day.
A short nap of 20 to 30 minutes can help more than a longer one, which risks leaving you groggier rather than more alert.