Shannon Loves Crossfit. Can't you tell?

4 individual rounds:

400 meter run

Max rep continuous air squats

3 minutes to recover

The air squats must be performed without any rest at the top or the bottom. Any indication of pausing and you are done.

Record total number of squats.

In ancient Homo sapiens, as in people today, a short lower heel stretched the Achilles tendon taut, Raichlen’s team concludes. That arrangement increased the tendon’s spring-like action during running and reduced energy consumption, enabling extended excursions, the scientists report in a paper published online January 26 in the Journal of Human Evolution. Read more

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