Slowing down on exercise

I am WAY too tired to exercise tonight. I was asleep before 9 pm last night. I am going to pamper myself and give myself tonight off. I was really good and did my exercise all this week. We are busy this weekend, but I am going to make myself do some extra exercise, maybe weights, on top of all the walking I plan on doing (we are going shopping in the States tomorrow and to my in-law's on Sunday).