For the last few years, I've averaged one or two hamstring pulls/tears each field hockey season, and I've always put it down to overtraining / tight hamstrings brought to a head by sprinting or over-stretching.

However, a team-mate has recently said that it could just be cramps?

Co-incidentally, since he's mentioned this my left hamstring (usually the non-tearing hamstring), has been quite 'twitchy' and almost on the point of cramp in a few totally innocuous situations (moving a bin, leaning over etc.).

How do I distinguish between a cramp and a minor pull in the hamstring, and if it is cramps, why might I be suffering them so often?

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