At the bottom you will see some tips from “the experts”. Approach these with caution! Sitting on a large ball as recommended is no guarantee that you will not slump and slouch into the same habitual position as in a chair. And the benefit of any exercise is completely dependent on how you do it, but there are no instructions provided regarding the how, nor are there any warnings regarding the possible hazards of doing them in a harmful way.
Instructions for how to do exercises are frequently incomplete in that they just assume if you are told what to do, you will know how to do it in a healthy, coordinated way. That is really just magical thinking and not at all true. For example, very few people will be able to perform a hip flexor stretch as shown in the article in a way that maintains the easy balance of the torso. While stretching the flexors of the right hip they will unconsciously pull down the left side of the torso, resulting in a tightening of the hip flexors of the left leg. This is like taking one step forward and one step back, resulting in getting nowhere fast!
It is of course possible to do all the exercises shown in a manner that is not counterproductive. But if you can do that, you probably do not sit in such a counterproductive manner that you need to do the exercises in the first place. Want proof? Book a lesson with me and I’ll show you. It’s easier in the long run to prevent the bad sitting than it is to repair the damage it does.