Fish and the environment

So eating healthy is good for you. But what about the environment? According to a recent report published in the journal Science, most of the world's seafood stocks will be depleted by the year 2048 if human consumption continues at its current rate.
Eating fish, or rather fish oil has many positive effects on ones health:

Benefits of Fish Oil:Extensive scientific research has concluded that Omega 3 fish oil health benefits include:

1) Lowering LDL (bad) cholesterol levels in the body.
2) Stopping the buildup of fatty deposits (triglycerides) in the arteries.
3) Increasing the body's HDL (good) cholesterol levels.
4) Reducing inflammation in the blood.

Fish oil has also been used to treat conditions such as depression, eczema, IBD, macular degeneration and arthritis. Fish oil benefits the heart significantly, as well as the rest of the body.

But what now? Do we just stop eating fish so that our children and their children will be able to have fish in the oceans?

Not exactly. There are still many types of fish and shell fish we can still eat, what it mainly depends on is the form that the fish is caught. Certain methods can be detrimental to other species which can offset the fragile ecological system.

How do we know which fish is ok?

The people over at Seachoice (a comprehensive seafood markets program with the primary goal of realizing sustainable fisheries in Canada and abroad) have made a list of fish which we can eat worry free, fish which we should keep an eye on, and types which should be avoided.

You can find the list Here

AEROBIC FITNESS TESTING & CALORIC EXPENDITURE ESTIMATIONS

Here is a great article that I found on my mentor’s site. For more great articles by Craig Ballantyne please sign up for his free newsletters @ http://www.cbathletics.com

AEROBIC FITNESS TESTING & CALORIC EXPENDITURE ESTIMATIONS

Aerobic fitness is measured as VO2max (maximal oxygen uptake) and this attribute can be estimated from your performance in a 12- to 15-minute run. You must know the exact time and distance of the run (converted to meters).

Determine the average velocity of the run (for example a 15-min run):
Step A) Calculate your average velocityAverage velocity = 15 min run distance (meters)/15 min
Average Velocity= meters per minute

Step B) Use the average velocity in the following equation to estimate the VO2:
VO2max (ml/kg/min) = 33.3 + (average velocity - 150) x 0.178 ml/kg/min

ml = milliliters kg = kilograms min = minutes

You now have an estimation of your aerobic fitness in relation to your bodyweight. The average VO2 of an active college male is ~ 40-50 ml/kg/min and is slightly lower for active females.
Second equation:

To determine the number of calories you burned in an exercise session you must first convert your aerobic fitness estimation to L/kg/min (so divide your score by 1000). For example: 50 ml/kg/min --> 0.050 L/kg/min

Then insert the appropriate values (body weight and exercise duration) in the following equation. For VO2, you need to estimate a percent intensity at which you were working. For example, on a hard run you might say you were exercising at 80% VO2max whereas after a brisk walk you would likely be exercising at only 50% VO2max.

Calories burned = VO2 (L/kg/min) x wt (kg) x time (minutes) x 5 (kcal/min/LO2)

5 (kcal/min/LO2) = the number of calories used per liter of oxygen consumed.

So for example, a 70 kg subject with a 50 ml/kg/min VO2max exercising at 75% VO2max for 30 minutes:
Calories Burned = (0.050 x .75) x 70 x 30 x 5

Calories Burned= 0.0375 x 70 x 30 x 5

Calories Burned= 394 kcal

Hopefully that wasn't too confusing. Again, you don't need to know it, but you might be interested in at least knowing your estimated aerobic fitness.