Sometimes your body just needs a day to recover. After my first few free weight workouts, and then first class of Ju-Jitsu were I worked out in both kids classes and the adult class I knew this morning when I woke that my body needed a recovery day. I don’t have any guilt about it. I would rather a recovery day than a cold or back spazems that force the issue. Tonight is first karate class of 2016 so I just skipped the morning work out.