Although I would not consider myself a beginning lifter, I have never included running much in my work outs. I have always been able to out perform most girls at my age and weight (20 years old, 5'5" and 120lbs). I do much better with upper body work outs than lower body work outs. Since I have started college, it has been difficult for me to find another girl to consistently lift with, so I have resorted to more at home work outs that I can do on my own time.
I am trying to include running in to my every day activities. I have never been very good at running, seemingly because I am out of shape. I am athletic, I just lack any endurance whatsoever. I also have hyperthyroidism, meaning my metabolism is too fast; Effectively, my cells use oxygen too fast. As of now, I have right around a 10 minute mile, which is practically walking, but it is too difficult for me to go any faster.
In order to get better, obviously, I need to run more. Is it best to run every day? Or should I still be taking rest days? If so, how many? What type of breathing would help supply more oxygen to my body? Are there any pre-work out routines I should get in to? In general, what are good practices to help improve my running ability?