Wow, those adductor stretched ISO holds I did last session have proved to work extremely well and fast! My legs and hips feel so much looser, and no more ache in my abductors when I stand in a sumo stance and lean to one side to stretch etc
I basicly sit on the floor, put the soles on both feet together and try pull the heels as close to my groin as possible, then put a dumbell on the inside of each knee and hold for a minute
Last session I did a 15lb dumbell for a minute at the start of the workout, and then a 30lb dumbell at the end of it where I do my usual postworkout cooldown and stretching
give if a shot if you have tight adductors and most people do - a must for powerlifters and box squaters!
Other ones to try are the bulgarian splitsquat hold for a minute, does the same for tight hip flexors. Bodyweight is sufficient. And the snatch grip stretched ISO hold RDL for the hammies, start just below the knee and lower to the floor as you loosen up and tire, I just use a 45lb oly bar.
I do these at every lower body session