Fitness needs to be perceived as fun and games or we subconsciously avoid it.
On a selfish basis I really enjoy sports and activity.
My Daddy liked physical fitness and wanted me to be a prizefighter.
I try to be a hard boiled sometimes. My kids see right through it. I'm acting. It's always 'When I say you'll be back at 11 that means 11 not 11.15. Do you hear me!?' Then 'Yeah Dad.'