Hi, this is Jamie Glick. I'm here to talk about the key muscles needed to run track. When you're running on a track, you need to use a lot of different muscles and coordination with each other in order to propel yourself around that track as quickly as possible. When you're running, you need to use just about every muscle in your leg in order to propel you down the track. First muscle that you're going to use is called the hip flexor or psoas muscle. This muscle will take you down the track by lifting the hip forward. So, it's lifting the hip forward. In coordination with that muscle, you have a quad muscle, that's the front of your thigh. And that'll also help to lift your hip and also extend your knee out. Quad muscles are also very important if you want to slow yourself down. That's the job of quad muscles, to slow down that stride at the end of your run. The hamstring muscle also comes into play. Hamstring muscle as you're running will help you bend your knee will also help you propel yourself to the next step own the track. Now the muscles below the knee, you have a very big set of muscles down here called the calf, it's also called the gastrocnemius and soleus. They attach on the bottom to the Achilles tendon. And these two muscles and the tendon are important to propel yourself. And this is where you get your acceleration from. And you get that push and that bounce off the track from the Achilles tendon the gastroc and the soleus, also called the calf. Another very important muscle is the gluteus muscle. You have the gluteus maximus in the back, you have the gluteus medius on the your side. And gluteus maximus, which also has a smaller one next to it, the gluteus minimus. They serve also to provide your power. It's very important when you're starting to push. When that knee is bent, you're going to get that power from the glute. One more set of muscles, not to forget is your abs. So, your abs, your obliques, your erector spinae, they all form your trunk muscles. And that's what keeps you upright and keeps you together. So you're not twisting and arching and maintaining a nice, stable base for the rest of your body to be on.