Strenuous

The strenuous grade is both moderate and difficult. Even in this grade, treks reach around 5000-5500 meters. You walk generally 6-7 hours every day. Strenuous treks require good physical condition and acclimatization. if some problems appear, you have to walk down and take some hot drinks or soup. You may get affected fast if you have high blood pressure, asthma, heart disease or complicated medical conditions.