Re: the shin pain, I used to run a lot and would get shin splints pretty badly. What fixed it for me was actually stretching and foam-rolling my calves. Apparently there are muscles or tendons that wrap from your calf to the front of your leg and when your calf muscles are too tight they pull and apply pressure to your shins. Stretching or rubbing my shins didn't help at all. Foam rolling was really the key but if you don't have a roller try just stretching and massaging your calves really well. I suspect you could use a can (like canned food can) too it would just be more pressure. Eventually the muscles build up and it goes away.