I needed to find a way to make the gym fun for him. Kids feel like things are fun when 1) they get to make choices, 2) there is variety, 3) they get to make choices.
So I came up with this little plan, told him we would do 4 rounds, and he could choose which exercises to do in each round.
The best part is that this can be done at home, different exercises thrown in for little kids, it can be made more of a surprise by writing the exercises on cards and drawing at random. Use your imagination and get those kids (and parents!) moving.