1、站直全身,手臂伸直,与身后互相交叉手指,手掌朝上,让后5HlK上抬起手臂,令肩胛骨往后仰,rRIQ部肌肉往中央挤压B5vT
10yearsago,Airbnbco-foundersBrianCheskyandJoeGebbiainflated3airbedsintheirSanFranciscoapartmentandstartedwhathasbecomeaglobalphenomenonintravel.