This means you decrease your speed for each repetition. For example: the set is 4 times 50 freestyle ascending, the first 50 you start pretty hard. The second 50 is a bit slower. The third 50 is even slower. And the 4th and last 50 is the slowest.

This means you decrease your speed for each repetition. For example: the set is 4 times 50 freestyle ascending, the first 50 you start pretty hard. The second 50 is a bit slower. The third 50 is even slower. And the 4th and last 50 is the slowest.