X hits on this document

62 views

0 shares

0 downloads

0 comments

21 / 25

AGC/United Learning • 1560 Sherman Ave., Suite 100 • Evanston, IL 60201 • 800-323-9084

SOURCE OF ENERGY. FOOD CONTAINS NUTRIENTS AND STORED CHEMICAL ENERGY. CELLS IN OUR BODIES CONVERT SOME OF THIS CHEMICAL POTENTIAL ENERGY INTO OTHER FORMS — USEFUL FOR LIFE PROCESSES AND THINGS LIKE SKI- ING. AND SOME IS TRANSFERRED INTO THE ENVIRONMENT. THAT’S WASTE ENERGY. SO HOW DO WE GET FROM TRAIL MIX TO MAKING TRACKS? THE BODY NEEDS FOOD ENERGY FOR ALL KINDS OF USEFUL THINGS: GROWTH, RESPIRATION, RE- PRODUCTION. DIGESTED FOOD IN THE SMALL INTESTINE IS TRANSFERRED TO THE BLOOD SYSTEM AND TRANSPORTED TO CELLS WHERE IT’S ABSORBED. THAT’S WHERE SOME OF THE CHEMICAL POTENTIAL ENERGY IS CONVERTED TO USEFUL ENERGY.\E NOW, HOW MUCH OF THIS CHEMICAL POTENTIAL ENERGY IS CONVERTED TO ENERGY THE BODY CAN USE DE- TERMINES THE EFFICIENCY OF THE PROCESS. BRENDON: 448 KILOJOULES PER 30 GRAM SERVING. WHAT’S THIS BASED ON? ALYSON LEWIS: THAT’S A GOOD QUESTION, BRENDON. ESSEN- TIALLY, THAT NUMBER TELLS US THE AMOUNT OF ENERGY AVAILABLE TO THE AVERAGE BODY AND, IN THIS CASE, FROM A SERVING OF GRANOLA. BRENDON: SO THAT’S THE GRANOLA OUTPUT ENERGY? ALYSON LEWIS: THAT’S RIGHT. SO SOME RESEARCH HAS BEEN DONE TO DETERMINE HOW OUR BODY USES FOOD AS FUEL AND, MORE SPECIFICALLY, HOW EFFICIENT THE AVERAGE BODY USES FOOD AS FUEL. BRENDON: SO WHAT DOES THIS MEAN TO ME? ALYSON LEWIS: I GUESS YOU COULD THINK OF IT AS YOUR BODY HAVING AN ENERGY BUDGET. IN OTHER WORDS, YOUR BODY KNOWS ABOUT HOW MUCH CALORIES IT SHOULD BE TAKING IN, IN A DAY. BRENDON: AND IF I DON’T TAKE IN ENOUGH I RUN OUT OF ENERGY? ALYSON LEWIS: ABSOLUTELY. IF YOU’RE NOT TAKING IN ENOUGH ENERGY, WE’RE PROBABLY GOING TO FEEL TIRED AND SLUGGISH. AND ON A LONG-TERM BASIS, WE’RE GOING TO SET OURSELVES UP FOR SOME MORE SERIOUS HEALTH COM- PLICATIONS.

21

Document info
Document views62
Page views62
Page last viewedTue Dec 06 18:08:14 UTC 2016
Pages25
Paragraphs262
Words6363

Comments