Massage on the camino
Find a massage therapist who can give you basic training for feet, legs, hands, shoulders, backs, including seated massage. It's not difficult to learn and will make a wonderful difference to your whole experience. Otherwise get a video/DVD or books. Look up reflexology, hand massage, stretching and acupressure points as well. Work out a massage and stretching routine so you'll feel confident. Yoga etc is also excellent for flexibility.
Take arnica oil or similar, but you could also use olive oil off the bar in cafes if doing seated massages. (What a way to meet new people and be sooo popular!)
While walking, you could do hand and arm massage and acupressure on yourself, and stretches, like putting your stick across your shoulders and hanging your hands/forearms over it.
When you stop, to assist circulation, do the 'dead parrot' - lie on the side of the road, wherever, put your legs straight up, feet up against anything that may be available. (Also good to do lying in your bunk at night). Another version is to lie with legs bent at right angles, resting on something. (Good for back problems too).
Pamper your feet! Everyone aches, so a foot massage is a blessing after a day's walk; offer to trade massages with fellow pilgrims.