This lecture covers the concept of Euclidean correlation functions and the transition from Euclidean to real time using Wick rotation. The instructor explains the analytic continuation and the n-point correlators in both Euclidean and real time. The lecture also delves into the thermal n-point functions and the importance of Wick rotation in understanding the correlation functions. The presentation concludes with a discussion on good and bad habits, emphasizing the significance of maintaining healthy routines.