Insoles put pep in your step.
I have never run with any type of insert in my shoes, but that being said I did feel like these made a difference. The pair of shoes I used them in had quite a few miles on them, but I can safely say that the inserts made the shoes feel springier, peppier, and overall “newer” feeling. They still feel this way after several weeks of use and I’m looking forward to being able to try them out on a timed run. Overall, with my limited experience I would still recommend them to someone who is looking to experiment with adding an insert into their existing running shoes.