In Need of a Rest

I've been trying to maintain 3-4 days in a row of workouts followed by 1 rest day and I've been pretty good about it.  However, the third and certainly the fourth days are always pretty difficult.

WOD

15 min AMRAP

6 HSPU
12 KBS 53 lbs (Rx)
18 Tactical Lunges

6 Rounds

"Tactical Lunges" are walking lunges in which you pass the kettle bell to your opposite hand at the bottom of the lunge.  Needless to say, they're pretty hard after a while.  The HSPUs didn't bother me much and I even felt like the KBSs weren't getting too hard until the 5th round or so.

At any rate, I definitely need a rest day.  I'm way overdue for an Off-day Topic anyway, and so I'll leave my discussion on rest until then :)