| A | B |
|---|
| aerobic | anything that makes your heart go fast |
| hamstring | The muscle in the back of your leg, above your knee |
| heart | The muscle that pumps blood |
| target heart rate | 140-180 beats per minute |
| pulse | your heart beat |
| quadriceps | the muscle in front of your legs, above your knees |
| triceps | push ups make them stronger |
| abdominals | crunches make them stronger |
| sweat | it cools your body down when you exercise |
| stretch | it makes your muscles longer |
| chest neck wrist | three places to take your pulse |
| sweat trophy | a drop of sweat running down your face |
