approx.30 days,i dont know about the exercise thing but i wouldnt go on that,not saying its not true,just never heard of it.weed is one of the longest drugs that will stay in your system.ood luck.no,i dont know how to get it out of your system any faster.sorry...there r some drinks i used to use on my parole officer,they worked!(platinum drink x)45 bucks though..but i always pased!again,good luck!!