trying to improve your health...
One of the key items we are hearing nowadays is how we must strengthen and support our "core muscles". I've never been quite positive if I'm "engaging" these muscles when I'm walking or sitting or doing work.
And I've found a simple trick to check.
Cough one time when you are DOING something... walking or whatever. When you cough you will FEEL the core muscles tighten to where they should be. When you sense this, try to continue holding those muscles as tightly and firmly as they were when you coughed.
While walking this morning, I discovered that checking the muscles regularly throughout the walk "got them" where they need to be and eventually started to keep them there.