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Birds fly, fish swim, and humans run. The instinct to run and sprint is present in everyone. How much will 100m sprint training change my body? Observe the changes for just one month. Running 100m fast 5 times is a much more valuable exercise in terms of training effectiveness and weight loss than walking for an hour. In addition, your muscles will become stronger and well-developed, so you will be able to run well temporarily. Think about how many hours a day a person walks can run well. You can't enjoy the fun and effects of running fast by walking. I hope we learn and realize the specialness that can only be enjoyed by running. #sprint #100m #marathon #marathon training #marathon class #2000m #interval #how to run 2000m well #marathon training #marathon coaching #how to run well #10km #5km #half #Jeong Seok-geun #Coach Jeong Seok-geun #Jeong Masa #marathon #running #track #running #health #diet #Lee Bong-ju #Olympic #gold medal #lose weight #health #track and field #record #limit of speed #marathon competition #fartlek #circuit training #2000m #3000m #100m #police SWAT #maritime police SWAT #firefighter #special forces #physical test #7 minutes perfect score #Seoul #Korea #stretching #hospital #pharmacy #blood circulation #sleep #sleeping #fatigue recovery #running #trail run