I'm Beth Hoover and today I'm going to show you how to improve your core strength. Making sure that you have a strong core is very important for not only activities of daily living but also making sure that you have a safe workout. Today I'm going to show you how to perform exercises that are going to work the rectus abdominis, the transverse abdominis as well as the internal and external obliques. We're going to do that by performing a plank exercise and I'm going to show you a couple of progressions. To begin, you're going to start with a standard plank. Now you can perform these either from your knees as the pivot point or the toes. Extend the body and come down onto your forearms, keeping the abs very tight and the back straight, we're going to start the first progression by lifting the elbow as if you are punching up towards the ceiling and then we're going to rotate and go to the other direction, making sure that you keep the body straight while you are performing these and continue to breathe. This is going to really focus on those oblique muscles as well as the inner muscles of the transverse abdominis and the rectus abdominis. For the next progression we're going to start in the plank position and again you can come down to your knees as well but from the plank position we're going to just extend and reach one arm forward. This again, removes one contact point from the floor so the core is having to work even harder to maintain the position. I recommend you perform these at least three to four times a week and you'll notice a big improvement in the strength of your core in no time.