A dead hang is a simple bodyweight exercise that targets muscles in your upper body. You either hang from a pull up bar or rings and let your body hang long for as long as possible. To practice dead hangs grip the bar. Lift your feet and hold yourself in a hanging position.
This is just horrid but amazing.
45 second hold on a Leg Extension either full contraction (top of range) or full extension (weight off the stack but only just). Then 10-12 reps. Once done, 30 Walking Lunges