By Tanner Garrity The best fitness routine is a consistent one. But that doesn’t mean it needs to be conventional. If prison curls and neighborhood runs are no longer inspiring you, I’m not particularly surprised. After all, some people have already started selling off their Pelotons. The second a form of exercise starts to feel like a chore, it’s just you versus however much discipline you can manage. Which is a shame. Most of us are already fighting that battle a dozen different ways throughout the day. The key to keeping your training going is keeping it fun. And the key to keeping it fun —…