1. climbing a short flight of stairs ; A
2. walking one mile briskly B
3. cross-country skiing; B
4. 15 minutes of stretching exercises; D
5. lifting a heavy weight with few repetitions; A
6. jogging a 5 km fun-run; C
7. eating healthfully; E
8. dancing for 30 minutes E
9. carrying a heavy shopping bag from a store to your home B
10. swimming 10 laps; C
11. pushing a large piece of furniture to the other side of a room; A
12. cycling to school every morning A
13. lifting weights with many repetitions; A
14. jumping rope to warm up D
15. regular exercise in all areas B
