hi iam 19 years old and iam considering taking a creatine supplement,my question is that i have a very active job i mean i come home with a shirt coverd in sweet every night 5 days a week i work 3 hours a night loading boxes at ups.i was wondering if it will be ok to take creatine or would i cramp up or whatnot.i drink a gallon of water a day?also about a year ago i took cell teck for a little wile and my lower back started to hurt a little i was told it could be my kidnys what do u guys think?and is there anything i can do for that>
thank you