This title may sound a bit scientific but the posterior kinetic chain is simply a group of muscles on our back (posterior) side that we use in everyday activities like walking, jogging and lifting things up, but that are also very important in sports performance particularly in generating forward movement. This posterior chain is fundamental in jumping, throwing, kicking and punching. The main muscles in the chain are the erector spinae (the two muscles that sit either side of the spine in the lower back), the Gluteus maximus, and the hamstrings, both on the back of the leg. Like the cylinders in a car these muscles must fire in the correct order to propel you forward and to keep your posture correct and keep you free from injury. There are a number of lifts in kettlebell training that target the posterior chain, and will thus help with the movements described above. In home personal training we also do lots of boxercise training that involves these kicking and punching actions that wil alsocompliment kettlebell training to make the client fitter and stronger.