Finals are on Friday and Saturday because the Deutsches Turnfest (German Gymnastics Festival) is in Leipzig at the same time. The Turnfest is a big festival for gymnasts which usually takes part every four years. Around 80.000 participants compete in the different disciplines the German...
I don’t think it is possible to strengthen the ACL as it is a ligament. But you can strengthen the muscles in your leg, which can prevent the twisting motion of rupturing the ACL.