It is very common for physical exertion and high altitudes to trigger asthma. To manage and prevent these symptoms, you can use: Rescue Inhaler: Use a fast-acting bronchodilator like salbutamol 15 to 30 minutes before climbing or walking uphill to open your airways. Always carry this with you. Controller Inhaler: Daily use of an inhaled corticosteroid (such as fluticasone or budesonide) helps prevent symptoms by reducing long-term airway inflammation. High Altitude Prep: Consult your doctor before travelling; they may temporarily adjust your controller dose. Please see your physician to safely tailor these medications to your personal asthma action plan.