Take clothing that is suitable for the season always bearing in mind that it can rain, even in the summer.
Remember to use a cap or hat to avoid direct sunlight on your head. This will prevent you from suffering from sunstroke and heatstroke and getting tired faster.
Use several layers of light clothing instead of a thick garment. A thin channel of hot air can circulate between the garments and your skin thus maintaining the temperature and preventing heat from escaping.
Use a hiking staff or stick. Not only does it help with dif cult terrain, it also prevents tendinitis.