leaves dying at bottom of plant

how do i stop my leaves from dying at the bottom of my plant i really dont care but is there a trick. also im in my almost 4th week of flowering should that be normal? its funny cause thats the only leaves thats dying is the bottom or leaves under the plant

normal bra. they should continue to yellow to the top slowly during final flowering

Dont worry about the bottom all the good shit is at the top, if the leaf has done its job it starts to loose its energy when its crisp and starting to go bad snip it off with a razor/sharp knife etc dont just pull it off, the plant will then put its energy into whats still good, also bottom branches that are showing they will not develope into anything are best removed, again this lets the plant put energy into whats important, (the business end) the top, look at the top when well in flower and look at the bottom, if you cut away the very bottom branches it will then put all its energy into what it has left, keep it simple friend, hope this is of some help,

hell yea thats what i was doin but a couple days later more start to turn so now i know what to do thanks