FB Fit

So today is the optional stretch day in my first week of Fit. I’m exhausted. I limped through this first week. I don’t usually look forward to the rest days because I miss that workout complete feeling, but today I’m thankful for the break. I have completed several of the other programs including a booty/abs mix and it has been awhile since a program has left me this wiped out. Any one else experience this with Fit?