I'm tired of holding regular planks. Enter the Copenhagen Plank. The Copenhagen plank is a style of plank that is not only practiced in the Danish capital, but also works the inner and outer thighs as well as the core.

It's a side plank, but for the advanced. It's for advanced athletes. This exercise has great benefits for the core. By now you know that a strong core is essential for preventing injury, maintaining posture, and protecting the spine and other joints in everyday life and in other sports and exercises.

I decided to do two minutes of Copenhagen planks every day for a week. Sixty seconds on each side. Read on to see how it went.

A normal plank is to keep your body in a straight plank position, resting either on your palms or forearms and your toes. This targets the entire torso, not just the back and arms.

And the side plank is done with the body on its side, resting on one forearm and one leg, with the other leg stacked on top of it. This is another great exercise for the core and shoulders, with special emphasis on the obliques, the muscles that run across the trunk.

The Copenhagen Plank takes it to another level. The Copenhagen plank is an older cousin of the side plank that not only works the core, but also the adductor and abductor muscles, the inner and outer thighs, respectively.

Let's start by looking at how to perform the Copenhagen plank with perfect form. For this movement, you will need a gym bench, box, or footstool. [Click here to see how to do the Copenhagen plank.

The classic side plank is great for working the obliques, but the Copenhagen plank really works the obliques because the obliques work extra hard to stabilize your body with the weight on one leg. After two minutes of this plank position, the obliques were worked on both sides.

After a week of Copenhagen planks, I became very aware of the inner and outer thigh muscles. These muscles are not worked that hard, so it was humbling to feel them firing.

A study done on the Copenhagen plank found that it strengthened the hip adductor muscles and the outer thighs and was effective in reducing pain. These medial and lateral thigh muscles are essential for lateral movement and also help protect the various joints of the leg and prevent injury.

Yes, the Copenhagen plank targets the shoulders as well. However, this movement seemed to put more stress on the shoulder than usual, as more weight is placed on one shoulder.

Personally, I love strengthening my upper body. So the Copenhagen Plank is a win-win workout for me, as I get to strengthen my shoulders and core.

To get great results in the core training department, you need to do this for much longer than a week. Additionally, I want to mention to everyone that in order to train the abdominal muscles, you need to move the body fat that is on top of the abdominal muscles. Let me explain how to calculate body fat percentage and why it is so important.

I don't have a lot of fat on my abs, but I do have enough fat to hide most of my abs. But the fact that this plank causes such a serious abdominal burn definitely tells me that it is helping to enhance my abdominal muscles.

Exactly. See above for more on inner and outer thigh burn.

The Copenhagen plank is a big improvement over the regular side plank because it works muscles other than the core. In addition, the entire body is heated up because all muscles must be kept working in order to keep the body in alignment.

Look, as far as body weight exercises go, this is great. Personally, I plan to incorporate it into my core training on a regular basis.