Improving mechanical efficiency is one of the best ways to enhance performance. aaronport8100 is one of our post-collegiate #trackandfield athletes and he's been working hard to improve his #sprinting mechanics. #Repost aaronport8100 with repostapp ・・・ Slowly getting those arms open in the back. Finding those singular focuses makes it easier to correct and build as a whole. #iLoveAL #athleticlab #sprinting #acceleration #workhardtrainhard