While the hours aren't 100 reps per 30 minutes (thank you), a general trend is starting to snowball that I'm trying to figure out how to handle. We're starting to blur the lines between recreational sports and pure dedicated fitness activity.

I know they're all real time and effort, but what happens if a ultra marathon runner joins this challenge and runs 10 hours a day? Where do I start to draw the line?

It's a tough spot for me to be in when the spirit is mainly for hammering out gym reps as the primary focus, with cardio as something to use more for rest days or modest supplemental workouts. When I play baseball for 6-8 hours, I personally view that as fun and not exercise, which is probably why I count it for so little and feel this way about this (not singling you out, but trying to get through to some people here). I know tennis games can be great cardio (at times very intense) as well, but I'm personally biased to think of that as sports for fun versus me exercising.

Feedback more than welcome. I never want anyone to feel discouraged from being active, so I'm trying to find out how to draw the line between fun and concentrated exercise across everyone here before 1,000+ rep days are the new norm because of long bike rides and calisthenics.