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Kim Hyung-seok / Professor's Show Dongchimi Episode 136 Broadcast on June 20, 2015 How long should a person live? Where were the conditions for health? The second problem in the 100-year-old era, stress How long should a person live? When do you feel old? How can you overcome loneliness? Two ways to stay young What 96-year-old Professor Kim Hyung-seok feels these days The most unfortunate thing in life #greatlecture #KimHyung-seok #loneliness #oldage #100yearsold #dongchimi #mbn ☞ Subscribe to MBN Entertainment : / mbn_entertainment