Travs, just watch out for fascitis starting up in your hip muscles. Prolonged tightness in one or two can send the others into spasm which then irritates the fascia that separates them all. It's very tricky to diagnose as it presents as being similar to groin strains and hernias. It's a nightmare to get rid of and in my case it left me with permanent tissue scarring.
The trigger was too much tightness over too long a period, and not enough rest and healing.