I've been at the gym 3-4 days a week now for 3 months. The hardest part is getting up at 5:30 am (the only time I have when hubby is home to watch kids and I'm not already exhausted or asleep)! I usually walk, bike, or if I'm feeling really energetic, eliptical for 20 min, lift weights (weight depending on how I feel that day, but I notice it's naturally about half of what I used to on my arms, the rest is about the same), then 10 more minutes cardio. I feel (and look) sooooo much better than I did with the first two. I naturally have short labors (9 and 6 hours) so I don't want them to be shorter, but if that's what happens, I'm much better with that than a 24 hour labor!