The main work of the guide is to provide the correct information about the area and treks but he will do lots of things on Trek. He will show you a way by leading in the front along with serving food and providing the best accommodation. He also briefs you about the plan for the next day or upcoming days. While walking he will tell us about the importance of place, history, altitudes & mostly whatever you ask him. In case you get sick he will give you medicine as well as tell you what to do to prevent it.