the body. there are many resources to read about all of them, but i wanted to offer you one simple technique that you can do at any time.
find a comfortable place to sit, preferably upright unless you have an injury that prevents it.
count to four as you inhale, at any pace that you like.
and that’s it. it's so simple. you can do this for a few minutes, even set a timer if you wish. when you are finished, sit quietly and notice the effects on your body and mind. 