Roll down in your chair using the Alexander Technique to feel easy and neutralize your posture. This practice is particularly useful if you're feeling really tired and need to find some new energy.
A simple movement that will lightly stretch your back. You will find that you will gain more clarity and more presence in your body.
If your body is feeling a little tight, this practice is perfect to release some of that tension, giving your body mobility and a moment to just breathe.