My daughter lives right below Runyon Canyon Park - and is blessed to have both the vista and the exercise opportunities of Runyon literally at her doorstep. When visiting her, I go there every day. There are frequent publicly available yoga classes - free or for nominal fee. The hiking - several different paths offer different levels of difficulty and height - is fun and often social. The views are spectacular - a different view of Hollywood, for sure! Feels almost like you are miles from civilization - even though not infrequent sightings of celebrities (who, for the most part,want to remain anonymous - and appreciate not being ogled) make you realize you are in the midst of a metropolis.