On Friday night, I went for my 1.5 mile around my neighborhood instead of heading down to the track. The next day, I noticed the right side of my right foot felt sore. I must have come down on it wrong during that run. However, I was not going to run again until Sunday so I figured it would be all right.
Unfortunately, that was not the case. I was barely able to complete half the run before I had to give it up. Now here we are on Monday, and it hurts just to walk on it. Therefore, I think I will be cancelling ALL training this week. I will still go to wing chun class on Wednesday night. Other than that, I need a week to rest.
Lesson of the day: immediately put any and all training on hold for even the SLIGHTEST injury. Otherwise it could become not so slight very quickly.