I bought some zinc and magnesium last night to help boost up my sleep and recovery, because a good sleep is hard to get for me. The zinc pills have 50mg in a pill, I take 1 of those. The magnesium pills have 250mg in a pill, should I take 1 or 2? I only weigh 135lbs, but I don't even know if that matters. Can you take too much magnesium? Most ZMA pills have 450mg in them, so I don't see 500mg being a problem. And what is the vitamin B6 for in ZMA pills, and is it worth it to buy that seperately also?