That GOOD sore

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At work I have to exercise twice a day and recently I've added in a couple extra sessions in my own time because I've really fell behind with my plan.
At night when I go to bed I'm exhausted my muscles ache and I wake up and feel my arms and legs heavy and I just can't wait til rest day. It may sound strange but I actually love this, I love going to bed tired, feeling like I deserve the rest and I love that, my muscles are growing soreness. Mon-Fri, I've got it covered...now for the dreaded weekend and not undoing all my hard work...