The 12 Worst Types high jump surfaces Accounts You Follow on Twitter
https://wiki-triod.win/index.php?title=High_jump_surfaces:_Expectations_vs._Reality
Just like a lot of track events, jumpers have 3 efforts at each height. Heights are raised 2 cm after each round, and only those who clear the bar carry on to the next round. The winner is she or he who clears