stability ball
noun[C]
uk/stəˈbɪl.ə.ti ˌbɔːl//stəˈbɪl.ə.t̬i ˌbɑːl/(alsobalance ball,exercise ball,fitness ball,Swiss ball,yoga ball)alargeballforsittingorlyingon whileexercising
（可以坐在上面或躺在上面进行体育锻炼的）抗力球，稳定球
There arelotsofcoreexercisesthat can be done with astabilityball.有很多核心的练习可以用抗力球来做。
Step 1: Liefacedown on astabilityballwithhipsandthighssupportedby theball.第一步：面朝下躺在稳定球上，用球支撑臀部和大腿。
- Asfarasworkoutequipmentgoes,stabilityballsandresistancebandsare two of myall-timefavorites.
- Betweenlifts, she doescrunches- andworksastabilityballforbalanceandcorestrength.
- You should onlyperformtheplankon thestabilityballif you havemasteredthetechniqueof thefloorplank.