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[Jack Daniels Calculator] How to find the practice time that suits you https://ameblo.jp/kmgor11/entry-12594... This is a YouTube channel for amateur runners who are struggling to improve their times 🏃♂️💨 We are distributing free form improvement videos that will help you run more efficiently just by watching the videos that have been used by over 10,000 people in total! 🏃♂️🏃💨 ↓ https://bit.ly/3Rv5VO2 ・My time started to drop after turning 50 ・I can't run fast ・I don't feel like I can run easily ・I always lose pace after 30km ・I get cramps in my legs For those who have these problems, we are posting how to learn "efficient form" on YouTube! [SPIRITS RUN homepage] HP: https://spirits-run.com/ ◆Running coach Michi Twitter: https://twitter.com/sr_michirun?s=17 Instagram: / mr.k.023 #marathon #marathontraining #spiritsrun