Female aerobatic pilot enduring negative G torture

British female aerobatic pilot, Amelie Windel, endures negative G torture in her Extra 300 stunt plane. The plane can endure up to plus or minus 10 G, meaning that the pilot can be under up to ten times their body weight during certain stunts. Negative G is the opposite - it's when all the weight is directed towards the head and is an extremely uncomfortable feeling.