[Restarting a day]

I want to repeat a day but its taking me to the next day.  Does anyone know if that is possible?

[New Hear Hello]

Hi Everyone. I am 67 and have COPD/Emphysema.  I also have always been a couch potato.  I recently went to a Pulmonologist and my lungs are only working at 63%!  I smoked for 30 years and quit 22 years ago.  As you age your lungs decline so my lungs will just get even worse.  I decided to do this program to try to make my lungs stronger, and started out on day 1 and could only run 20 seconds before I was completely out of breath.  I think it will take a year to get to a 5 k.  I am going to repeat day one for a week and see if I can go on to day 2 the next week.  Right now am determined to do this!