...are a motherhumper. According to http://www.sportsinjuryclinic.net/, I have done absolutely everything to cause them. First it was the worn out shoes (until this week, the last time I bought sneakers was 2005), then it was the jump start into a hardcore fitness program, then it was increasing my running by more than 10% per week (try 60%), and now it's lack of rest.
I wish I was a kid again and sports injury was practically impossible for me. I definitely miss the days of not knowing what a sore muscle felt like!