Is there a checklist of things I should look for when trying to see if someone's doing a perfect plank? They always say back straight. I assume that means head to glutes because, unless your legs are ...
I hear the phrase engage your core all the time, and honestly, I've never really understood what people saying it are trying to get me to do, and the answers to the question How to 'engage your core'? ...
I found when exercising (through Kinect, pilates video, etc) that I am asked to 'engage my core'. How do I do this? How do I know when I am truly engaging my core rather than just sucking in my ...