10 rounds, each for time of:
Swim 50 yards
Rest 1 minute

OR

10 rounds, each for time of:
200-m sprint
Rest 1 minute

If you cannot get to a pool, lake, or other water source, sub for a run of similar length.
Post times to comments.

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Scaling:
If you do not have access to a pool or open-water swimming for today’s workout, substitute with 200-m run repeats. Intermediate athletes can do this workout as prescribed. Beginner-level athletes should reduce the number of rounds.

Beginner Option:
7 rounds, each for time of:
Swim or run 1 minute
Rest 1 minute