Under Mourinho, Chelsea became the fifth English team to win back-to-back league championships since the Second World War (2004â05 and 2005â06), in addition to winning an FA Cup (2007) and two League Cups (2005 and 2007).
The Fosbury flop, the most widely used high-jump technique, requires lots of flexibility so the jumper can stay as close to the bar as possible to clear the greatest height. A big back arch allows the jumper to literally wrap herself around the bar before flipping her legs and feet clear.
Variations [edit]. More intensive versions of this jump include bending down (over) and touching the floor in between each jump. Power Jacks. Power Jacks are similar to jumping jacks, except a person squats lower and jumps as high as possible during each repetition.A similar jump exercise is called half-jacks, which were created to prevent rotator cuff injuries, which have been linked to the repetitive movements of the exercise.ore intensive versions of this jump include bending down (over) and touching the floor in between each jump. Power Jacks. Power Jacks are similar to jumping jacks, except a person squats lower and jumps as high as possible during each repetition.