True or false the digestion process starts in the stomach

If you are having a hard time lifting something, you should arch your back. a. true b. false

Not type of personal health monitor can calculate the number of calories a person burns. true or false?

Mason joined the water polo team at his school. as part of his conditioning, mason's coach requires a 25-minute run during practice. mason's heart rate reaches 125 beats per minute, but his target heart rate zone is 138—183 beats per minute. what should mason do to get the most benefit for his heart? increase the amount of time he runs increase the speed at which he runs decrease the amount of time he runs decrease the speed at which he runs