I just came back from a groin tear this summer and my experience was definitely not good. I tore from the back of my groin (closer to my glutes) right up into my lower abs at rugby around June/July of 2008. The first time I was completely back and able to run full steam since that injury was around june of this summer, but I extended the injury by using my groin too much while healing and not resting enough. I did all the physio (dry needling, stim pads, active release, etc.) as well as a ton of excercises to strengthen the entire pelvic area (yep, I have a super strong pelvic area, tell your lady friends).
The only advice I have is to make sure you're 100% before trying to do anything hard, I screwed myself by coming back too early and made the recovery way longer than it needed to be. The biggest difference for me was the stretching / excercises for the groin and pelvis stabilisation, do them all (unless they hurt of course).
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