I'm restless, I only get about 5-15 minits sleep every night, and while I'm awake I'm (almost) always standing or walking or running! I only sit down if I have to! I'm not sure of my longest period without sleep, but I can tell you my longest sleep lasted around 6 munths in 1998 from June 24th til December 8th! I was in a coma after a road accident!