The muscles of the core may be the most important group of muscles in your body. They are involved in almost every movement you make, from breathing to running to lifting weights to swinging a tennis racquet to getting out of bed in the morning. They are also extremely important for good posture. If your core muscles are weak, your posture suffers, and your chances of back pain and injury skyrocket.
Rectus Abdominus Obliques (external and Internal) Transversus Abdominus
Sitting for prolonged periods of time — with little muscular contraction occurring — shuts off a molecule called lipoprotein lipase, or LPL, Sara Rosenkranz said. Lipoprotein lipase helps to take in fat or triglycerides and use it for energy.
“We’re basically telling our bodies to shut down the processes that help to stimulate metabolism throughout the day and that is not good,” Sara Rosenkranz said. “Just by breaking up your sedentary time, we can actually upregulate that process in the body.”