140bpmで90rpm回せるギアでいっきに125rpm以上回すと少し遅れて心拍数が170bpmまで高まるな。速筋を使う練習もでき

Default Widget

This is Sidebar 1. You can edit the content that appears here by visiting your Widgets panel and modifying the current widgets in Sidebar 1. Or, if you want to be a true ninja, you can add your own content to this sidebar by using the appropriate hooks.