According to Trekking standards and experience, treks are divided into four types- Easy, Moderate, Difficult and Strenuous. The challenge in terms of both technicality and geography increases as we move higher in that order. Thus, Easy treks could be suitable for all while Strenuous and Difficult treks are meant only for those who already have a certain number of experiences in trekking.Furthermore, Grading will help you choose trekking and climbing that best suits your fitness level and experience. Please keep in mind that this is only a general guide. A variety of factors, including weather may add to the challenge. Everest Base Camp trekking is suitable for those who are moderately fit. Moderate trekking will require at least 5-6 hours of walking every day, crossing 4000 m above high altitude passes and long & exhausting walks through rough trails, rocks and boulders. Therefore, you will require physical and mental fitness, positive attitude and readiness to face high altitude. Previous hiking or camping experience is preferred.