I have a Gym Membership and there are LOT of machines to choose from. What is the best routine I can have to do the most good and how often should I go and for how long? I go Most of the time 3 days a week for about 30-50 minutes but some days I am not as ambitous as others so i don't do as much cardio as I know I should. I have about 5 Months until my Wedding. I am 5'4 and 160 lbs. I would love to lose 30lbs but I would be happy with 20 to be honest. I have a lot of muscle so I dont want any more but rather tone what I have if that makes sense. I try to eat good by the fiance is a TERRIBLE eater and skinny as can be so it can be hard sometimes

Help please!