David Goggins is an ultramarathon runner, ultra-distance cyclist, triathlete, author and motivational speaker. He is the only person to have completed Navy SEAL training, Army Ranger School and Air Force Tactical Air Control Training. He served in Iraq and Afghanistan. Goggins did a massive amount of pull-ups to raise money for the Special Operations Warrior Foundation to honor friends who were killed in a helicopter crash in Afghanistan. He also holds the record for the most pull-ups in 24 hours (4,030 in 17 hours). Despite having a heart defect and asthma, Goggins has competed in more than 60 endurance races, including running 100 miles in under 19 hours with no prior training. He has written a self-help memoir entitled Can’t Hurt Me. Goggins lost over 100 pounds in 2 months in order to be able to try out for SEAL training. He is 6’1″ tall and weighs about 190 lbs.