Stretchly is a PC software that reminds you to do breaks. To rise, to move every so and so minutes. And I have to say, it really helps us computer workers who are staring on a screen all day to put in little breaks to stand up, or to look far away or to do any sort of little things that are not “staring on a screen”.
I am using it now for around 3 months and I am convinced that Stretchly helped me extinguish my back and neck aches and generally staying sound.