The phrase "rest position" refers to a state or position where someone or something is relaxed, still, or not actively involved in any activity. It is a state of calmness and stability. Full definition
Then another Family cat put into a freezer and literally frozen in resting position and no ONE would do anything about animal cruelty! (slaw.ca)
There is a «tilt to wake,» which reveals notifications when you pick the phone up from resting position. (digitaltrends.com)
The differences between the tongue movements and resting position of the tongue in breastfed and bottle fed babies are probably due to the properties of the latex / silicone artificial nipple. (brianpalmerdds.com)