If you’re already feeling like a couch potato: stop reading. An 80-year-old Japanese climber reached the summit of Mount Everest Thursday, becoming the oldest man in history to achieve the feat. Yuichiro Miura’s family, who tracked his climb through Facebook, cried with joy when the call came in confirming he’d done it. “This is the best feeling in the world,” Miura told his family. “I never imagined I would become the oldest man to get here, at 80.” Miura’s 43-year-old son, along with eight other climbers, accompanied him on the trek. “There's no greater feeling,” Miura gushed again. “But I've never felt this tired either."