I run a lot and it used to be like that, but now I'm desensitized so that sometimes even after I run a lot I still feel down. It's also hard if you're injured o

I run a lot and it used to be like that, but now I'm desensitized so that sometimes even after I run a lot I still feel down. It's also hard if you're injured or tired. I don't see why you're downvoted though: runner's high does give me something to look forward to / some way to relax so I wouldn't need to do something like drink excessively.