Coach told son it won't take a couple of days to know who worked out and who chilled out. When they come back and do their proficiency test which is weights, running, and cardio it won't take long to know who was doing what they were supposed to do over december break.
This. When I was playing, we had to do testing our first day back. The one thing everyone dreaded was the timed 2 mile run. Coach would give us some absurd time we had to finish in. He would know right away who kept up with conditioning and who just sat around and ate all break. Those that didn't make the cut got to go to extra 6am conditioning for a few weeks, besides being in the dog house with coach.