Lath lath should exercise big muscle mainly group, like pectoralis major, deltoid, humerus broad flesh of triceps of 2 flesh, humerus, back, musculus glutaeus maximus is mixed a quadriceps.

• 瘦人应重点锻炼大肌肉群，如胸大肌、三角肌、肱二头肌、肱三头肌、背阔肌、臀大肌和股四头肌等。