As I previously stated, I walk 20-30 miles per week already. I'm constantly on my feet at work, sometimes for 12-14 hrs straight. Sometimes I don't get to eat, and I'm lucky if I have 2 minutes to use the restroom! The other night, for instance, I worked 15 hours straight without sitting down, and without having a break to eat. That's not uncommon, we're always understaffed. Nursing is not a desk job-- it is constant, on-the-go, adrenalin-pumping work. I am 5' 6" and 112 pounds, I just don't think I need a TON of cardio
I think I am going to stick with weightlifting and swimming for now, and I'll check back with you all in 6-8 weeks. Wish me luck!
For your height you are quite thin. I wouldn't "pound the cardio" either, but you can do some for endurance. Weights, and diet are going to be your friends if you want to gain muscle. If you are that thin, you really need to look at your diet to help you gain muscle.
Sounds like your life is very busy, but *try* to keep yourself on track even at work. I know it's hard, I come from a family of doctors, so I know you guys don't get to pick and choose when things get busy.
I hope you find something that will work for you. Swimming is great exercise, and I think that with weights is a good choice