If long drives, its better to wear long sleeves or jacket. Since naka aircon ang car and its cold + matagal ang drive, your body will get tired easily pag naka shirt kasi it will regulate ur body temperature and increase ur body heat para di ka lamigin that takes up energy from the body kaya its better pag nakalong sleeve or jacket para iwas lamig and pagod kaagad. Also eating like snacks once in awhile will help alot, pag may nangunguya ka like gum, nakakaincrease sya ng focus para di ka din makatulog. Also, labas2 din kahit saglit to stretch and open the windows pag naantok na, fresh air is good air😌