About six or seven years ago I used to do 10K several times a week but my legs and knees began to hurt.
I moved down to 5K but then bought a rowing machine which I really enjoyed but that broke and I restarted my running again. I’ve got a new rower coming in early August according to Amazon but I’ll try and maintain a weekly 5K.
I forgot about how good you feel due to the endorphins released. I would recommend some slight outdoor exercise if anyone is feeling a bit down. It works for me for a little pick me up.