The Plank.

Perhaps the most perfect exercise you can do.

Not only is it good for your back, it's great for toning up the mid-section.

A study published in the Journal of Strength and Conditioning found that the plank exercise provides activation to 100% of your "six-pack" muscles, while traditional crunches provide only 64%.

I got that snappy fact and a few others from the short informational video below!

Very inspirational too.

Check it out.

Got your back, as usual,

Dr. Rina

https://www.youtube.com/watch?v=9qMOM8DrIIY&feature=youtu.be