I've read here and elsewhere that there is a lot of benefit to using several different pairs of shoes. The idea is that the different stress on the feet/legs/ankles, etc., makes us constantly adapt and get stronger while avoiding repetitive stress, right?
Here's my question: what if the shoes are all the same brand (in my case, it might end up being NB)? For example, 890v3s for everyday training, 1400 for speed, and 1690 for trail. I'm sure I'll want to add another, lol. I'm assuming the shoes will have inherent similarities and perhaps be built on similar lasts. But at this point, I don't really know what I'm talking about. ;-)
Thanks in advance for your help!