Natural speed, please. Try to pronounce properly and avoid noise in the background.
At first I thought I'd made the wrong choice... you know, I was never really sure that it was the thing for me and I used to go back to my flat at night and think, 'Well maybe I should have listened to my parents after all'. They thought I'd get too upset and that I should have stuck with something office-based like the rest of my family but it was my best subject at school - well Biology was - and all the staff there thought medicine would be a good choice, so... Anyway, one day I woke up and felt fine about it and it's been great ever since.
Thanks, alyeiapp!