Ok, this summer I really wanted to gain some muscle since I lost 80 lbs last year and am a toothpick. I was going to sign up for a gym and workout, problem is I'm going on vacation from June 29th to July 12th and dont' want to sign up for june to pay an extra $30 for just a week. Just wondering how long it would take me to build muscle (average muscle, I don't want to look big) get a six pack (want to get rid of loose skin, doesn't have to be six pack just don't want loose skin sagging) I heard 6 weeks is this true? Also do most gyms charge for a personal trainer? I'm just turned 17, am 6'2" 180lbs for those who want to ask. Have loose skin on my stomach/love handles and man boobs that cardio won't get rid of. I bought a bench but it doesn't help because I probably don't do proper technique and don't know what other exercises to do. Thanks. (Don't want to use any supplements)