Celebrating my bday with a solo trip in Kerala

Keralites, After so much hesitation, i forced myself to book the flight tickets to Kochi. I’ll be in Kerala 1pm tomorrow Need your help planning an itinerary. (Mods pls don’t remove this post) I’m 26M and I am doing an unplanned minute trip to your beautiful country. Please help me gather some itinerary. I went through the Wikipedia tagged but I’m not sure it’s useful. I am getting overwhelmed with options. I enjoy nature, I’m very extroverted. I don’t drink or smoke. Help me with budget hostels. Cheap thrills. I wanna spend time exploring than on hotels or travel. Also not a big foodie. I’m a fitness content creator and I’d love shoot some handstandin scenic places. I have 6 days leaves,