I was nervous about day 3 too and had planned on doing day 2 again before moving to day 3, but I was encouraged by someone here to move onto day 3 and if I had to stop and walk at some point to then call it day 2.
I actually did it! 20 straight minutes and it wasn't as bad as I though it would be!!
If this 53 year old and 221# mom can do it so can you!!