One thing I've realised is that time spent walking is never wasted. During a walk you can think more clearly, or you can listen to a (mind-expanding) podcast,

One thing I've realised is that time spent walking is never wasted. During a walk you can think more clearly, or you can listen to a (mind-expanding) podcast, or you can walk with friends or your partner which counts towards building & strengthening relationships. That's without even considering the health benefits. If you drive somewhere you could walk, that time really is wasted - because you should be focusing on not killing anyone instead of on anything interesting. Same walk over and over? Could be a nice walk! I repeat the same walks, because I live near a park and a beach. I could roam the streets randomly instead, but that wouldn't be better. Running is better for cardio, sure, but I tended to find that changing clothes, warming up, running 5K, recovering and taking a shower takes close to an hour - and I could have walked that 5K in the same time and not been exhausted for the rest of the morning. Longer distances are more worth it but regular 10-20K runs turned out to be bad for my knees.