-- Posted by About To B R E A K at 2:22 pm on July 10, 2008 every time i lift a weight, somethingin my arm cracks? and every time i do a sit up, something in my back/pelvis/leg cracks? -- Posted by La Motta at 2:23 pm on July 10, 2008 Your bones adjusting to your new muscle movements?? -- Posted by Volleychic21 at 2:24 pm on July 10, 2008 yeah that happens in my knees sometimes when i crouch down and i dont kno y -- Posted by holliheartsu at 2:26 pm on July 10, 2008 cause your about to break buh...no i'm just kiddin that was gay anyway my arms use to pop alot when i would play soft ball i never knew why but its nothin to worrry about -- Posted by Smargon at 2:27 pm on July 10, 2008 You're getting old. -- Posted by baileysababy6 at 2:27 pm on July 10, 2008 you're either tearing muscles, or you don't have much cartilage in your joints.