My knees hurt pretty much all the time

Probably. For glucosamine and chondroitin I’ve pretty much stuck to Costco’s in-house brand and that works well for me.

Cool. I’m trying to find a brand of melatonin that is consistent. I had a bottle of gel caps at 10mg that were perfect. Damned if I can remember the brand though.

I stand behind a counter at work. Are there knee/ankle/foot stretches I can do while standing/working without scaring the customers or getting laughed at?

@YakAttack actually just doing a 100 or some toe-ups a day is really good for your feet and legs :)