There have a problem in your rear wheel hopping, the problem is that you use the arm to hop the bike too much. Try to relax your arm and try to focus and use your both feet to hop the bike more, this feeling is more like that you are kicking the bike pedal to make it hopping with you.

If you always try to focus on your upper body for the hopping, you may wast lots of energy for using your arm to pull up your rigid and heavy legs through the bike. Just use the same concept that you used your foot hopping on the ground without the bike, your arms and upper body only used to be assisted for your hopping movement.

你在後輪點跳時有個問題，問題就是在於你用太多手的力量去跳動你的車。試著放鬆你的手，然後更多專注用在你的腳去跳動你的車子上，就感覺是你在用你的腳去踢動你的車子使它跟你跳起來一樣。

如果你一直專注在使用你的上半身在跳動上，這將會使力浪費掉許多力量在透過車子拉動你死板且重的雙腳。只要使用一個相同的概念，就是像你用你的雙腳在平地上跳動一樣，你的手和你的上半身，通常都只是用來輔佐你在跳動的動作。