"Part of the beauty and much of the moral seriousness of sport derives from the severe justice of strenuous play in a circumscribed universe of rules that protect the integrity of competition. Records are worth recording, and worth striving to surpass, because they serve as benchmarks of excellence achieved under the pressure of competition.” George F. Will

We recently examined the effects of aging on skeletal muscle. Here’s Jim Martin, an exercise scientist from University of Texas, Austin on the effects of aging on performance, specifically power.


Workout of the Day

Today we are swimming. This is a breathing exercise designed to improve anaerobic performance.

We’re taking a bit of a break. Get ready for Monday!!

Swim the entire length of an Olympic Pool underwater.

When able, return surfacing once at about the middle of the pool.

Again, as soon as able cross. This time surfacing only twice, once at about 1/3 across and again at 2/3 across.

Repeat this pattern 4 times for a total of 5 times or fifteen lengths.

Record your total time to complete the exercise.

Done right, this has much of the feel of drowning. Good luck!

Rankings based on total time to completion. Rest after each pass only as long as needed to complete the next pass. If you should have to surface more than the pass requires, rest and repeat the effort.

Feedback, comments, questions as usual send to feedback@crossfit.com