having power to move heavy weights or perform other physically demanding tasks.

advantage or profit gained. Good results or effects, something advantageous. profit.

regulatory substance produced in organism and transported in tissue fluids such as blood. Chemical produced by the body to control functions.

Acts or words that reduce pain or sadness. To try to make distressed person feel better.

begin to be.

process by which substances are produced and discharged from cell, gland, or organ for particular function in organism or for excretion.

Calming; having released stress. To release the tightness in muscles.

Lever on a gun that you pull to fire. cause event or situation to happen or exist.

relating to branch of biology that deals with normal functions of living organisms.

As regards the study of the mind.

of considerable importance or worth.

To move or go without much speed.

Relief from sadness, suffering or trouble. To allow a film, music etc. to be sold/distributed.

act or process bringing change. Acts of making or becoming something else. To exchange one kind of money for another.

raise levels of physiological or nervous activity in.