請問有沒有比較好計算幾趟的方法 - 游泳討論

By Edward Lewis
at 2011-01-31T13:03
at 2011-01-31T13:03
Table of Contents
最近喜歡腦袋放空游泳
但是又想確認游多遠以及速度
雖然還是都游到設定的時間
但是就沒有辦法確定游了幾趟
以前都會在心理計算 但是不但會記錯 也破壞了放空的自在
所以想問問看是不是有什麼好用的絕招 可以簡單的計算趟次
(跑操場計算趟次就比較簡單 每跑一圈就換一次跑道 輕鬆省腦力)
(但是游泳實在想不出好方法.........)
--
但是又想確認游多遠以及速度
雖然還是都游到設定的時間
但是就沒有辦法確定游了幾趟
以前都會在心理計算 但是不但會記錯 也破壞了放空的自在
所以想問問看是不是有什麼好用的絕招 可以簡單的計算趟次
(跑操場計算趟次就比較簡單 每跑一圈就換一次跑道 輕鬆省腦力)
(但是游泳實在想不出好方法.........)
--
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