On March 20, 2026, singer Sung Si-kyung shocked Instagram with a fresh update on his weight management. In a series of modern, chic photos, he drew major attention while revealing the effort behind his recent transformation. He shared that he combined nightly cardio—walking and running for an hour—with working out three times a day. He added that he maintained a minimal diet and relied on supplements to manage his body. Fans flooded the comments with praise for his determination and grit, leaving reactions like "How much did you work out? Amazing!" and cheering on his continued progress.