How physically demanding is flatbed?

780813

{"replyTo":"","text":"don't do it.","replyToPid":0}

766863

{"replyTo":"","text":"sometime it a 15,sometime its 1. the pay is worth the work!","replyToPid":0}

458074

{"replyTo":"","text":"I begun a job on flat bed after Carhouler, this job is easy and faster ","replyToPid":0}