I'm wondering if anyone else is experiencing extreme tightness (mostly hamstrings) the day or two after a really solid stretching routine? I have been steadily improving my all-around flexibility by consistently doing the GST stretch series, and when I feel very limber my back pain is pretty much gone (I have a "disc protrusion" on L3/L4 and L4/L5 from a poor deadlift about a year ago which flares up often). There are, however, some days where I have an excellent stretching session and then experience extreme hamstring tightness the next day or two which also causes significant back pain for me throughout the day. Sitting throughout much of the day certainly doesn't help me either.
Is this fairly common, this sort of extreme tightness after a solid stretching session? Any other tips to loosen up, or is this just the body's way of recovering and eventually it will heal and I'll find myself more flexible than ever?