How much should a person work out?

I will generally work out for an hour and a half a day, on the days I have time. Then I will do lengthy stretch. However, if you are new to working out, 30 minutes is great to start! Then work your way up. I know I work out more than most people, but I'm an exercise science major, so it's kind of my job Work your way up to an hour a day for 6 days a week, and you'll be doing great! Good luck!

I'm usually in the gym about 45-60 minutes 3 days a week. I don't do cardio, (never have liked running) but have a job that keeps me fairly active and off my butt all day. I would say you are doing plenty of cardio, if anything I would add another rest day, maybe Wednesday. I don't know if this helps but if what you are doing is working keep doing it. By far the most important thing for weight loss is your diet though.

You could try changing it up a bit. For instance, maybe you could do one hour of exercise two days a week and slowly build up. You may need to throw in an extra rest day, but there are advantages to working out for a longer period of time. It's great that you're sticking with it with stuff like Jillian Michaels and lots of cardio. Best of luck on your health journey!!

I honestly think you are doing fine. I think 30 minutes 6 days a week is better than doing more but not doing it consistently. That being said I am no expert but I have been a working mom of small children and I know all about not having time. I wish I had stuck to 30 minutes a day at your age instead of taking the "all-or-nothing" approach.
Keep up the good work!

I work out 5-6 days a week. Friday is my primary rest day. Only because it's one day I can have a good hair day and not have to take 2 showers a day. If I feel really sore another day during the week (other than the weekend), I'll take a day off. I do about 20-30 minutes everyday.

Also manage to lose at least a pound a week

If you feel like you should do more then your body is probably telling you to. I know what you mean with not having time, I have three kids, a part time job on top of being in the military and some days by the time I get home from the gym I feel like its only a place I stay on nights and weekends.
P90X is good, but if you are looking for something more challenging, try Cross Fit or Gym Jones (sp?).
What I ended up doing was making my own workouts at home that last about an hour. It incorporated DBs,Kettlebells, Med Balls, Strength Bands, and this step called a 360Step, It cut down on my time away from home and started toning me up more than I thought, I started about a month ago and realized that a change in my workout routine is what I needed to kick start my extra weight loss.
Let me know if you want some personal ones, I have written some up for friends and they enjoy it and usually start seeing the results within a month.
I dont get on the boards often so message me if you want.

But 5-6 times a week is perfect. 30 min is OK, but your body is just getting started at that point, strive for 45-60 min of stacked strength/endurance cardio. Its a perfect hybrid.