<human>: Alright guys, some back story. I'm a 22 year old female, heading into her final semester of nursing. For the last six weeks I've been in clinical, which consists of 4 - 12 hour shifts a week. This works out to a 56 hour week for the last six weeks.. 

By the time I'm done my shift I'm so exhausted I couldn't manage to get myself to the gym or on the treadmill (I live in Saskatchewan, its too cold to run outside!! -36 c with the wind chill today). After my evaluation of my clinical experience I climbed on the treadmill. 1 km in 13 minutes... and I had a heck of a time even getting that. At my best, which wasn't even that good, I could get 6.5 km in an hour. I put on 3 minutes to my time and lost most of my endurance.

So

Can you condense the text into three sentences or less?
<bot>: final semester nursing student feeling blue about losing endurance and stamina. Looking for some pointers to get stamina and endurance back up quickly :(