Training - Squats

Ass and hip machine - 2 sets of 50 with the stack
Calf Press - 1 x 20 with the stack

Squats - no belt/no wraps
135 x 10
225 x 5
315 x 5
405 x 5
455 x 3
500 x 4 popped left adductor on 5th rep.

Notes - Weights felt super light.  I had at least 8 reps in me on the 500.  Maybe 10.  Went down on the 5th rep and my left adductor popped and I just dumped it.  This is one of those times that just leaves you baffled.  I felt really good, the weights felt light, fully hydrated, etc.  Nothing to explain this one except that something explainable just went wrong.  I have no idea how bad it really is.  I will know tomorrow morning.  This has not been a good year for me in terms of injuries.