I need to get my parents in shape...HELP!! Here's the situation: My dad is 6'4" 270, and has always been strong and in shape. The past 5 years he's let that go. He has somewhat of a back problem, but other than that, there's no excuse. My mom's about 5'6" 160 (and she'd kill me if she knew I was putting this) and has knee problems. I have been on them for the past year about getting in shape, because they are at a point in their lives where they can, and should. Being away at college, I haven't been able to have any hands on with either of them, but, this summer I'm home for 4 months and guess what...It's fat camp for the both of them, with drill sargent broncojosh haha. Dad is becoming my workout partner, and I'm giving my little sister (15) gym duties with my mom. My question comes now...I don't know what kind of workouts "older" people should be doing. Any diet, cardio, weight training advice would be great. Thanks guys/ladies