Sore Feet

When having long days of walking and/or standing -- how to help with sore and fatigued feet?

Notes

tl;dr: walk in everyday life a lot, try insoles, massage or ice feet, make sure you keep supportive shoes

Icing your feet can reduce inflammation that causes soreness. Apply ice to sore feet by filling a plastic bag with ice or rolling your feet on a frozen water bottle. Try to ice the affected area for 5 to 15 minutes a few times a day to help reduce inflammation. (source)
Your feet can change in size during your lifetime (even when you’re an adult) because they can spread out over time. (source)
Your sneakers may wear out after 400 or 500 miles and no longer provide the support you need. (source)
Arch supports, or orthotics, can keep your feet stable while standing or walking, eliminating pain. (source)
Walking regularly for exercise is actually the best way to keep your feet limber and healthy. (source)
You can also try some stretching exercises to help your sore feet. (source)
Massage the hell out of your feet. stretch them out. (source)
I found that a day of rest made them worse (source)