Dan O’Conor, the “Great Lake Jumper,” makes his 365th leap into Lake Michigan, Saturday, June 12, 2021, in Chicago’s Montrose Point. (AP Photo / Shafkat Anowar)

Dan O’Conor said he started jumping into the lake at Montrose Harbor on the city’s North Side last year to relieve stress.

Dan O’Conor at Fullerton Beach on Feb. 26, 2021. (WTTW News)

For months, Dan O’Conor has shocked his senses by leaping into Lake Michigan — every day. What was prompted last June by a hangover is now an opportunity for the Lincoln Square resident to help the city’s music scene. We meet up at Fullerton Beach to see him in action.