This is why your back is stiff, sore, or painful
It is not the condition of the activity you do that creates morning low back stiffness, episodic back pain, or damaged discs (herniation or bulge), but is actually the condition of how you use your spine/back to help produce extremity motion to lift, push, or pull objects.
How you operate your spine is what causes these manifestations.
Simply put you can either; move your spine along with the arms and legs to produce a movement, or you can keep the spine stable (like a column) so it can provide a solid platform for them arms and legs to work against. These two movement options are all that is available to everyone.
The Kaehler Core quickly helps your develop your thrive movement system and builds your best body so you can excel at rowing, running, triathlon, obstacle course racing, track and field, weight lifting or whatever it is you love to do.