I didn't really notice this until now. I stopped running about 20 pounds ago because my knees were bothering me and I was getting more than enough cardio at the gym and wanted to focus on strength training.
So I recently went outside with my dog and decided to just sprint down the block to get her a little bit of exercise...and because I just felt like it for some reason.
Holy crap it was so easy!! I felt so light and agile! I think I really want to take up running again because of how GREAT I felt! I never understood when people said they felt light on their feet, but now I do!
Cardio at the gym was getting easier, but now I really notice how "light" I feel