arm; skill; efforts; ability
to rub; to scrub; to scrape
far-infrared rays; far-infrared radiation; FIR
body; torso; trunk; build; physique; health
wick; marrow; core; heart; pistil (of a flower); stamen
to warm oneself; to sun oneself; to warm up; to get warm
individual differences; personal equation
person; someone; human beings; mankind; human (Homo sapiens); (other) people; others
to attempt; to test; to try out