My interesting post

the average human can hold their breath for 30-60 seconds. This limitation has more to do with the buildup of blood-acidifying carbon dioxide than the lack of oxygen, which your body stores in muscle proteins called myoglobin. People such as free-divers who practice diving underwater without scuba gear, have different techniques, such as hyperventilation, to decrease the concentration of carbon dioxide in the blood, allowing them to hold their breath for longer times. Denmark's Stig Severinsen currently holds the Guinness World Record for the longest free dive. In 2010, he held his breath underwater for 22 minutes.



https://www.youtube.com/watch?v=AqERqQj-ozc

Fitness goal

My goal is to increase my stamina. My fitness test will be the beep test. I will train by going for runs every morning

Interim report - HKin Coop

Hi Mom and Dad!
This is my interim report for the Human Kinetics Coop.

So far, the highlights for me have been:
- Beep test
- heart quiz
- rock climbing trip


I am the most proud of:
beep test


The most interesting things I have learned about are:
how our heart pumps
Calculating our heart beat(vo2 max)


An example of when I really pushed myself in SuperFit is:
Beep test


I could make improvements in:
Listening more carefully


I am really looking forward to:
- learning more about the heart
- Beep test


The Basics - WORK HABITS:

Attendance (classes missed and why) - some missed because of soccer games.

Participation in field trips (woo kim, grouse grind, rock climbing) - all except grouse grind

Lates (how many & reasons) - sometimes because lunch

Preparedness for class (gym strip &/or supplies) - always

Class time management (are you using your class time to complete your work?  engaged in class discussion? participating? following along? doing your best? or talking too much? ) - sometimes get distracted. Can improve more, but still complete my work.

Blog assignment completion - (out of 8 assignments) Comments? finished 7/8 to my full extent.

Self evaluation of work habits for each class in coop - G/S/N 

Biology 12:G
Exercise Science 12:G
Super Fit 12:G

vo2 max

my vo2 max according to my beep test is 52. It was good but i think i can improve and increase my vo2 max.

Grouse Grind Post

During the Grouse Grind i believe i reached zone 4. My heart was beating a lot faster than usual and my body temperature increased dramatically causing me to sweat and get dehydrated. The higher i went up the mountain the more steep it got. It became very hard to climb the mountain once i hit the half mark. My muscles were tired and i wanted to give up and just go back. I had no energy left and my pace slowed down a lot.I believe my aerobic system was used during the grouse grind because it was high indurance and my heart rate increased. During the Grouse my fat was used to fuel my body and give me more energy and then burned off as sweat and cellular respiration.

Heart Dissection Lab

external observation:
The heart was a lot bloodier than i expected it to be. It made me sick looking at the heart and how real it was. It was bigger than i expected and didn't really look like a heart but more like a piece of meat.

internal observation:
Although i didn't actually see the inside of the heart in person i can see in these pictures it looks a lot lighter than the outside and even more bloody. It looks like it would be soft and mushy from the inside of the heart.

QUESTIONS:
1) The most surprising thing for me was how bloody and real the heart was, every time i would look at it, it would make me feel sick, this surprised me since i didn't know i would feel like that.
2) the atria only has one job to collect and squeeze blood into the ventricles. The ventricles are larger because they need to contract the blood.
3) The left ventricle pumps blood to the entire body while the right only pumps blood to the lungs. 
4) The left AV Valves (mitral) function is to close when the left ventricle contracts to prevent back flow of the blood from the left atrium and right AV valves(tricuspid) function is to close when the right ventricle contracts. Then the blood from the ventricles can go out of the heart and into the blood vessels. Mitral and tricuspid valves open when the ventricles relax and let blood enter the ventricles from the atria.