I have finally realized how much tension I have been holding in my body and have begun to make small changes in the way of calmness. After slowly cooking a meal, I've decided it is almost always better to move this way. Even during high intensity cardio exercises, it's important to pace yourself and keep a relaxed posture.
A lot of times we get into the habit of rushing around that when there's a chance to slow down, we're still rushing. It may be impatience, or the belief that all tension and quickness keep us alert.
I've always done this when I cook. While I'm measuring milk or sprinkling salt into the water, it's as if I'm in a hurry to finish the task, and my body will seem more like I'm running from a sabre tooth tiger than making a meal!
Even when I'm writing, I catch myself lifting my shoulders, tightening my face, and sometimes breathing out of my mouth or holding my breath.
Last night I decided to try an experiment. I kept notice of my body as I prepared dinner. I kept my face calm, mostly noticing the space between my eyebrows, and my breathing, and then I became aware of everything as I did it. At first I worried that I would make mistakes if I was too calm or slow, but moving this way allowed me to enjoy the process, and the meal when it was ready.
On a side note, there are times when tension is too great to just let go. Especially if there's something we're turning over and over in our minds, it can be helpful to say a prayer, "Lord, have mercy on me," and repeat kind words back to ourselves, and/or favorite scriptures, when the enemy tries to convince us that we're failing at being calm. Intending to act calmly is an enjoyable and rewarding thing, not something we should see as a strict goal.
It's simple, whenever possible: move slowly, be aware, let go. Repeat with kindness.