Smoking effects an athletes performance output? 
Note in the following video the difference between the smokers and the healthy runner.
1)WHY do you think the runner finds it easier to exercise?
2) Formulate a reason as to why the non- smoker is able to breath better than those that smoke.

https://drive.google.com/a/mail.dcu.ie/file/d/0B__A8mB-XeX_bGpEWjJKZWhqZkk/view?usp=sharing

Each student receives a normal sized straw, they are asked to breath through it for 30 seconds, 

It may help to hold the nose for greater effect.
Next they are handed out a thinner straw, less oxygen has the ability to enter the lungs.
How do you feel while breathing through straw 1/ 2?
What are the differences in your breathing between straw 1/2?
One of the straws represents breathing with smokers lungs while the other represents breathing with chronic lung disease (as a result of smoking).
Which straw do you think represents breathing as a smoker and breathing with chronic lung disease.
Straw 1-
Straw 2-
After completing this exercise evaluate the differences between breathing normally and through the straws. 

Use thetips of your first two fingers (not your thumb) to press lightly over the blood vessels on your wrist. Count your pulse for 10 seconds and multiply by 6 to find your beats per minute. 
Using the tables below assuming you are a non- smoker, compare the results across the board.

Age (years) | Heart Rate (beats/min)
Less than 1 | 100 to 160
1 to 2 | 90 to 150
2 to 5 | 80 to 140
6 to 12 | 70 to 120
Greater than 12 | 60 to 100
Well-Trained Athletes | 40 to 60
Using all the information above compare your personal BPM to a smokers BPM and the ideal  BPM both at rest and during exercise.

- Watch the following video and answer the questions related in the forum.
https://drive.google.com/a/mail.dcu.ie/file/d/0B__A8mB-XeX_X2JzZ3pqQThxNXc/view?usp=sharing

From what you have learned in this lesson what do think would be the reverse effects if a smoker stopped smoking.